1
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Hussain A, Sravanthi R, Katta S, Ramachary DB. Two-step, high-yielding total synthesis of antibiotic pyrones. Org Biomol Chem 2024; 22:554-560. [PMID: 38116605 DOI: 10.1039/d3ob01923c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
A simple two-step dialkylation protocol was developed to synthesize biologically active antibiotics photopyrones, pseudopyronines, and violapyrones from bio-renewable triacetate lactone in excellent yields. These pyrones are functionally modified into another set of pyrone natural products by a single O-methylation reaction. The high-yielding gram scale synthesis of four natural products [pseudopyronine A, photopyrone A, pseudopyronine B and photopyrone C] demonstrated the viability for industrial applications.
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Affiliation(s)
- Akram Hussain
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India.
| | - Revoju Sravanthi
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India.
- Pharmacognosy and Phytochemistry Division, Gitam Institute of Pharmacy, Gitam Deemed to be University, Visakhapatnam, 530 045, Andhra Pradesh, India
| | - Sunitha Katta
- Pharmacognosy and Phytochemistry Division, Gitam Institute of Pharmacy, Gitam Deemed to be University, Visakhapatnam, 530 045, Andhra Pradesh, India
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2
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Hussain A, Peraka S, Ramachary DB. Organocatalytic Reductive Amination of the Chiral Formylcyclopropanes: Scope and Applications. J Org Chem 2023; 88:16047-16064. [PMID: 37948127 DOI: 10.1021/acs.joc.3c01074] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
We developed a sustainable three-component reductive amination protocol for the chemoselective coupling of optically active functionally rich donor-acceptor carbonyl-cyclopropanes with various amines under 10 mol % of diphenyl phosphate in the presence of Hantzsch ester as a hydride source. The catalytic selective reductive C-N coupling has wide advantages like no epimerization, no ring opening, large substrate scope, generating only mono N-alkylation products and simultaneously resulting in chiral cyclopropane-containing amines possessing many applications in the medicinal chemistry. In this article, we have shown the synthetic applications of reductive C-N coupling reaction to make chiral α-carbonyl-cyclopropane containing amines 8, double C-N coupled cyclopropane-amines 10, unusual C-N/C-C coupled cyclopropane-amines 12, chiral tert-butylsulfinamide containing cyclopropanes 14/15, and functionally rich chiral cyclopropane-fused N-heterocycles 16/18/19. Many of these chiral cyclopropane-amines 5-19 can serve as building blocks for the synthesis of drug-like small molecules, natural products, pharmaceuticals, and their analogues.
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Affiliation(s)
- Akram Hussain
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Swamy Peraka
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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3
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Roy P, Anjum SR, Sanwal SD, Ramachary DB. Direct organocatalytic transfer hydrogenation and C-H oxidation: high-yielding synthesis of 3-hydroxy-3-alkyloxindoles. Org Biomol Chem 2023; 21:8335-8343. [PMID: 37800473 DOI: 10.1039/d3ob01264f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
Readily available 3-alkylideneoxindoles were effectively reduced to 3-alkyloxindoles through transfer hydrogenation using Hantzsch ester as a reducing agent at ambient temperature and the greenness/sustainability of this protocol was assessed by correlation with Pd/C-mediated hydrogenation with hydrogen gas. Furthermore, an organocatalytic method was developed to access drug-like 3-alkyl-3-hydroxyoxindoles by C-H oxidation of 3-alkyl-indolin-2-one, using a catalytic amount of 1,1,3,3-tetramethylguanidine (TMG) as an organic base and dissolved oxygen in THF as an oxidant at room temperature. Key reaction intermediates were observed by controlled on-line ESI-HRMS experiments and identified by their corresponding mass (m/z) analysis. This two-step high-yielding transfer hydrogenation/C-H oxidation protocol was used for the total synthesis of medicinally important 3-cyanomethyl-3-hydroxyoxindole and formal total synthesis of (±)-alline and (±)-CPC-I in very good overall yields compared to previous methods.
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Affiliation(s)
- Pritam Roy
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India.
| | - S Rehana Anjum
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India.
| | - Shyam D Sanwal
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad-500 046, India.
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4
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Kumar Sharma S. The Importance of Organocatalysis (Asymmetric and Non‐Asymmetric) in Agrochemicals. ChemistrySelect 2023. [DOI: 10.1002/slct.202300204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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5
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Kamanna K. Organocatalysts based on natural and modified amino acids for asymmetric reactions. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2021-0026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Small organic molecules predominantly containing C, H, O, N, S and P element are found promising molecule to accelerate chemical reactions and are named organocatalysis. In addition, these organocatalysts are easy availability, stable in water and air, inexpensive, and low toxicity, which confer a huge direct application in organic synthesis when compared to transition metal catalyzed reactions and becoming powerful tools in the construction of a selective chiral product. Interest on organocatalysis is spectacularly increased since last two decades, due to the novelty of the concept and selectivity. Based on the nature of the organocatalysts used, they are classified in to four major classes, among them one of the types is amino acids derived organocatalysts. Natural amino acids are playing important role in building blocks of protein construction, and also intermediate products of the metabolism. α-Amino acid is a molecule, that contains both amine and carboxyl functional group. Their particular structural characteristic determines their role in protein synthesis, and bifunctional asymmetric catalysts for stereoselective synthesis. Two functional groups present on a single carbon acting as an acid and base, which promote chemical transformations in concert similar to the enzymatic catalysis. The post translational derivatives of natural α-amino acids include 4-hydroxy-L-proline and 4-amino-L-proline scaffolds, and its synthetic variants based organocatalysts, whose catalytic activity is well documented. This chapter discussed past and present development of the organocatalysts derived from natural and modified amino acids for various important organic transformations reviewed.
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Affiliation(s)
- Kantharaju Kamanna
- Department of Chemistry , Rani Channamma University , Vidyasangama , P-B, NH-4 , Belagavi 591156 , Karnataka , India
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6
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Sharma D, Kumar M, Das P. Synthetic approaches for cyclohexane-1,3-diones: A versatile precursor for bioactive molecules. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1946824] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Dharminder Sharma
- PG Department of Chemistry, JCDAV College Dasuya, Dasuya, Punjab, India
- Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
| | - Manish Kumar
- Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
- Department of Chemistry, Government College Seraj at Lambathach, Thunag, Himachal Pradesh, India
| | - Pralay Das
- Chemical Technology Department, CSIR-Institute of Himalayan Bioresource Technology, Palampur, Himachal Pradesh, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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7
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Li J, Shi Y, Clark BR. Semi-synthesis of antibacterial dialkylresorcinol derivatives. J Antibiot (Tokyo) 2020; 74:70-75. [DOI: 10.1038/s41429-020-0359-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 07/11/2020] [Accepted: 07/14/2020] [Indexed: 12/30/2022]
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8
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Antimicrobial secondary metabolites from agriculturally important bacteria as next-generation pesticides. Appl Microbiol Biotechnol 2019; 104:1013-1034. [PMID: 31858191 DOI: 10.1007/s00253-019-10300-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/25/2019] [Accepted: 12/03/2019] [Indexed: 10/25/2022]
Abstract
The whole organisms can be packaged as biopesticides, but secondary metabolites secreted by microorganisms can also have a wide range of biological activities that either protect the plant against pests and pathogens or act as plant growth promotors which can be beneficial for the agricultural crops. In this review, we have compiled information about the most important secondary metabolites of three important bacterial genera currently used in agriculture pest and disease management.
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9
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Martins TP, Rouger C, Glasser NR, Freitas S, de Fraissinette NB, Balskus EP, Tasdemir D, Leão PN. Chemistry, bioactivity and biosynthesis of cyanobacterial alkylresorcinols. Nat Prod Rep 2019; 36:1437-1461. [PMID: 30702733 PMCID: PMC6836626 DOI: 10.1039/c8np00080h] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Indexed: 12/18/2022]
Abstract
Covering: up to 2019 Alkylresorcinols are amphiphilic metabolites, well-known for their diverse biological activities, produced by both prokaryotes and eukaryotes. A few classes of alkylresorcinol scaffolds have been reported from the photoautotrophic cyanobacteria, ranging from the relatively simple hierridins to the more intricate cylindrocyclophanes. Recently, it has emerged that cyanobacteria employ two different biosynthetic pathways to produce unique alkylresorcinol scaffolds. However, these convergent pathways intersect by sharing biosynthetic elements which lead to common structural motifs. To obtain a broader view of the biochemical diversity of these compounds in cyanobacteria, we comprehensively cover the isolation, structure, biological activity and biosynthesis of their mono- and dialkylresorcinols. Moreover, we provide an overview of the diversity and distribution of alkylresorcinol-generating biosynthetic gene clusters in this phylum and highlight opportunities for discovery of novel alkylresorcinol scaffolds. Because some of these molecules have inspired notable syntheses, different approaches used to build these molecules in the laboratory are showcased.
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Affiliation(s)
- Teresa P. Martins
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR)
, University of Porto
,
Matosinhos
, Portugal
.
| | - Caroline Rouger
- Research Unit Marine Natural Products Chemistry
, GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech)
, GEOMAR Helmholtz Centre for Ocean Research Kiel
,
Germany
| | - Nathaniel R. Glasser
- Department of Chemistry & Chemical Biology
, Harvard University
,
Cambridge
, MA
, USA
| | - Sara Freitas
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR)
, University of Porto
,
Matosinhos
, Portugal
.
| | - Nelly B. de Fraissinette
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR)
, University of Porto
,
Matosinhos
, Portugal
.
| | - Emily P. Balskus
- Department of Chemistry & Chemical Biology
, Harvard University
,
Cambridge
, MA
, USA
| | - Deniz Tasdemir
- Research Unit Marine Natural Products Chemistry
, GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech)
, GEOMAR Helmholtz Centre for Ocean Research Kiel
,
Germany
| | - Pedro N. Leão
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR)
, University of Porto
,
Matosinhos
, Portugal
.
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10
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Kaurav MS, Sahu PK, Sahu PK, Messali M, Almutairi SM, Sahu PL, Agarwal DD. An efficient, mild and metal free l-proline catalyzed construction of fused pyrimidines under microwave conditions in water. RSC Adv 2019; 9:3755-3763. [PMID: 35518091 PMCID: PMC9060310 DOI: 10.1039/c8ra07517d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 01/10/2019] [Indexed: 02/03/2023] Open
Abstract
One-pot condensation of 4-hydroxy coumarins, aldehydes and urea/thiourea to build C-C and C-N bonds is described. Fused pyrimidines have been synthesized under mild reaction conditions using l-proline. The protocol has been performed rapidly and efficiently in water under metal free conditions. Heterocyclic derivatives have been synthesized using the present methodology and avoid the use of hazardous solvents over conventional organic solvents. A proposed mechanism could be established for three component reactions. The present study reveals the first case in which l-proline has been explored as a homogeneous catalyst in the synthesis of fused pyrimidines in water under microwave irradiation. This synthesis involves simple workup and acceptable efficiency. The most notable feature of this protocol is the ability of the catalyst to influence asymmetric induction in the reaction.
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Affiliation(s)
- Manvendra S Kaurav
- School of Studies in Chemistry, Jiwaji University Gwalior-474011 Madhya Pradesh India
| | - Pramod K Sahu
- School of Studies in Chemistry, Jiwaji University Gwalior-474011 Madhya Pradesh India
- Department of Industrial Chemistry, Jiwaji University Gwalior-474011 Madhya Pradesh India
| | - Praveen K Sahu
- Department of Industrial Chemistry, Jiwaji University Gwalior-474011 Madhya Pradesh India
| | - Mouslim Messali
- Department of Chemistry, Taibah University 30002 Al-Madina Al-Mounawara Saudi Arabia
| | - Saud M Almutairi
- King Abdulaziz City for Science and Technology P. O. Box 6086 Riyadh 11442 Saudi Arabia
| | - Puran L Sahu
- Indian Pharmacopoeia Commission, Ministry of Health and Family Welfare Sector-23, Raj Nagar Ghaziabad 201002 India
- National Dope Testing Laboratory (NDTL), Ministry of Youth Affair & Sports, Government of India J. L. N. Stadium Complex East Gate No. 10, Lodi Road New Delhi-3 India
| | - Dau D Agarwal
- School of Studies in Chemistry, Jiwaji University Gwalior-474011 Madhya Pradesh India
- Department of Industrial Chemistry, Jiwaji University Gwalior-474011 Madhya Pradesh India
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11
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Sahu PK, Sahu PK, Kaurav MS, Messali M, Almutairi SM, Sahu PL, Agarwal DD. Metal-Free Construction of Fused Pyrimidines via Consecutive C-C and C-N Bond Formation in Water. ACS OMEGA 2018; 3:15035-15042. [PMID: 31458170 PMCID: PMC6643823 DOI: 10.1021/acsomega.8b01993] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 10/10/2018] [Indexed: 05/22/2023]
Abstract
A facile and efficient protocol has been developed for mild construction of fused pyrimidines via l-proline-catalyzed reaction of 4-hydroxy coumarins, aldehydes, and 2-aminobenzothiazoles/urea. The reaction has been carried out rapidly and efficiently in water under mild and metal-free conditions. Current etiquette has efficiently synthesized the heterocycles and avoids the use of hazardous solvents over conventional organic solvents. A plausible reaction mechanism has been established in this study. This study represents the first case in which l-proline as a homogeneous catalyst has been explored in the synthesis of fused pyrimidines in water in view of simple procedure and acceptable efficiency. This method gives the target product in excellent yield with ease of workup.
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Affiliation(s)
- Pramod K. Sahu
- School of Studies in Chemistry and Department of Industrial Chemistry, Jiwaji University, Gwalior 474011, Madhya Pradesh, India
- E-mail: , (Pramod Kumar Sahu)
| | - Praveen K. Sahu
- School of Studies in Chemistry and Department of Industrial Chemistry, Jiwaji University, Gwalior 474011, Madhya Pradesh, India
| | - Manvendra S. Kaurav
- School of Studies in Chemistry and Department of Industrial Chemistry, Jiwaji University, Gwalior 474011, Madhya Pradesh, India
| | - Mouslim Messali
- Department
of Chemistry, Taibah University, 30002 Al-Madina
Al-Mounawara, Saudi Arabia
| | - Saud M. Almutairi
- King Abdulaziz
City for Science and Technology, P.O.
Box 6086, Riyadh 11442, Saudi Arabia
| | - Puran L. Sahu
- Indian Pharmacopoeia Commission Ministry
of Health and Family Welfare, Sector-23, Raj Nagar, Ghaziabad 201002, India
| | - Dau D. Agarwal
- School of Studies in Chemistry and Department of Industrial Chemistry, Jiwaji University, Gwalior 474011, Madhya Pradesh, India
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12
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Peraka S, Hussain A, Ramachary DB. Modular Access to Chiral 2,3-Dihydrofurans and 3,4-Dihydro-2H-pyrans by Stereospecific Activation of Formylcyclopropanes through Combination of Organocatalytic Reductive Coupling and Lewis-Acid-Catalyzed Annulative Ring-Opening Reactions. J Org Chem 2018; 83:9795-9817. [DOI: 10.1021/acs.joc.8b01315] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Swamy Peraka
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
| | - Akram Hussain
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Hyderabad 500 046, India
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13
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Ramachary DB, Reddy PS, Gujral J. Construction of 2-Thiabicyclo[3.3.1]nonanes by Organocatalytic Asymmetric Formal [3+3] Cycloaddition. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - P. Srinivasa Reddy
- Catalysis Laboratory; School of Chemistry; University of Hyderabad; 500 046 Hyderabad- India
| | - Jagjeet Gujral
- Catalysis Laboratory; School of Chemistry; University of Hyderabad; 500 046 Hyderabad- India
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14
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Jiang G, Liu M, Fang D, Tan P, Huang M, Zhou T, Jiang Z, Xu Z, Wang Z. A base promoted one pot solvent free version of the Ramachary reductive coupling/alkylation reaction for the synthesis of 2,2-disubstituted ethyl cyanoacetates. RSC Adv 2018; 8:8961-8964. [PMID: 35539882 PMCID: PMC9078616 DOI: 10.1039/c8ra00326b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 02/19/2018] [Indexed: 12/14/2022] Open
Abstract
An N,N-diisopropylethylamine promoted solvent-free Ramachary reductive coupling/alkylation (RRC/A) reaction for the synthesis of 2,2-disubstituted ethyl cyanoacetates has been developed. A series of 2,2-disubstituted ethyl cyanoacetates were synthesized in one pot by the RRC/A reaction of commercially available aldehydes, ethyl cyanacetates, alkyl halides and Hantzsch ester. A solvent free two step multicomponent reaction has also been developed for the preparation of 2,2-dialkylated malononitriles and 2,2-dialkylated 4-nitrophenyl acetonitriles. All the designed RRC/A products could be easily obtained with good yields by these methods. An N,N-diisopropylethylamine promoted solvent-free Ramachary reductive coupling/alkylation (RRC/A) reaction for the synthesis of 2,2-disubstituted ethyl cyanoacetates has been developed.![]()
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Affiliation(s)
| | - Min Liu
- Department of Chemistry
- Xihua University
- Chengdu
- China
| | - Dongmei Fang
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Ping Tan
- Department of Chemistry
- Xihua University
- Chengdu
- China
| | - Min Huang
- Department of Chemistry
- Xihua University
- Chengdu
- China
| | - Taiping Zhou
- Department of Chemistry
- Xihua University
- Chengdu
- China
| | - Zhenju Jiang
- Department of Chemistry
- Xihua University
- Chengdu
- China
| | - Zhihong Xu
- Department of Chemistry
- Xihua University
- Chengdu
- China
| | - Zhouyu Wang
- Department of Chemistry
- Xihua University
- Chengdu
- China
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15
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Armaly AM, Bar S, Schindler CS. Aluminum Chloride-Mediated Dieckmann Cyclization for the Synthesis of Cyclic 2-Alkyl-1,3-alkanediones: One-Step Synthesis of the Chiloglottones. Org Lett 2017; 19:3958-3961. [DOI: 10.1021/acs.orglett.7b01622] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ahlam M. Armaly
- Department of Chemistry,
Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Sukanta Bar
- Department of Chemistry,
Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Corinna S. Schindler
- Department of Chemistry,
Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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16
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Ramachary DB, Krishna PM. Asymmetric Synthesis of Nature-Inspired Bioactive Spiro Compounds through Organocatalytic Diels-Alder Reactions. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600145] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Patoju M. Krishna
- Catalysis Laboratory; School of Chemistry; University of Hyderabad; Hyderabad 500 046 India
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17
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Shashank AB, Ramachary DB. Organocatalytic diastereoselective synthesis of chiral decalines through the domino Claisen–Schmidt/Henry reaction. Org Biomol Chem 2015; 13:5110-4. [DOI: 10.1039/c5ob00562k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
General and operative domino Claisen–Schmidt/Henry (CS/H) reaction has been revealed to obtain highly substituted chiral decalines in good yields with excellent ees and des by using push–pull enamine catalysis.
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Affiliation(s)
- Adluri B. Shashank
- Catalysis Laboratory
- School of Chemistry
- University of Hyderabad
- Hyderabad-500 046
- India
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