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Geissler AGA, Breit B. Synthesis of β-Allenylamines by Addition of Chloroprene Grignards to N-Boc Imines. Org Lett 2022; 24:7967-7971. [DOI: 10.1021/acs.orglett.2c03105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arne G. A. Geissler
- Institute of Organic Chemistry, Albert-Ludwigs-University Freiburg, Albertstr. 21, 79104 Freiburg, Germany
| | - Bernhard Breit
- Institute of Organic Chemistry, Albert-Ludwigs-University Freiburg, Albertstr. 21, 79104 Freiburg, Germany
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2
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Zhang WD, Zou JY, Zhong Q, Li SS, Zhao J. Synergistic Pd/Cu-catalysed regio- and stereoselective borylation of allenylic carbonates. Chem Commun (Camb) 2021; 58:1037-1040. [PMID: 34951424 DOI: 10.1039/d1cc05854a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple Pd/Cu-catalyzed borylation of allenylic carbonates with B2Pin2 was developed using a cheap P(OEt)3 ligand. Under mild neutral conditions, 2-boryl 1,3-butadienes were obtained selectively in moderate to high yields. Furthermore, the use of different diboron reagents was also feasible in the reaction.
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Affiliation(s)
- Wei-Dong Zhang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Jia-Yu Zou
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Qin Zhong
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Shi-Sen Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Jian Zhao
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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3
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Geissler AGA, Breit B. Addition of Chloroprene Grignards to Aromatic Aldehydes: Synthesis of Homoallenyl Alcohols. Org Lett 2021; 23:2621-2625. [PMID: 33729803 DOI: 10.1021/acs.orglett.1c00527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A general procedure for the one-pot synthesis of racemic homoallenyl alcohols from the corresponding aldehyde and chloroprene-derived Grignards is described. Employing bis[2-dimethylaminoethyl]ether (BDMAEE) as an additive at low temperatures shifts the selectivity of the chloroprene Grignard addition to aldehydes such that it is almost exclusive toward allene formation. In a set of follow-up experiments, simple and more elaborate methods for further derivatization have been demonstrated, allowing quick access to more complex structures.
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Affiliation(s)
- Arne G A Geissler
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, Freiburg 79104, Germany
| | - Bernhard Breit
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, Freiburg 79104, Germany
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4
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Kim BS, Gutierrez O, Kozlowski MC, Walsh PJ. A Simple Procedure for the Synthesis of β-Hydroxyallenamides via Homoallenylation of Aldehydes. Adv Synth Catal 2018; 360:1426-1432. [PMID: 29861707 DOI: 10.1002/adsc.201800119] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A simple one-pot synthesis of β-hydroxyallenamides is reported. This procedure entails chemo- and regioselective hydroboration of 3-en-1-ynyl-sulfonylamides with Cy2BH followed by homoallenylation of aldehydes to yield β-hydroxyallenamides (up to 94% yield and >20:1 dr). Controlled synthesis of up to three continuous stereochemical elements was realized. Density functional theory (DFT) calculations suggest a concerted Zimmerman-Traxler chair-like transition state. Initial results suggest that enantio- and diastereoselective synthesis of β-hydroxyallenamides with optically active hydroboration reagents is viable.
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Affiliation(s)
- Byeong-Seon Kim
- Department of Chemistry, University of Pennsylvania, 231 S, 34 St. Philadelphia, PA 19104 (USA)
| | - Osvaldo Gutierrez
- Department of Chemistry, University of Pennsylvania, 231 S, 34 St. Philadelphia, PA 19104 (USA)
| | - Marisa C Kozlowski
- Department of Chemistry, University of Pennsylvania, 231 S, 34 St. Philadelphia, PA 19104 (USA)
| | - Patrick J Walsh
- Department of Chemistry, University of Pennsylvania, 231 S, 34 St. Philadelphia, PA 19104 (USA)
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5
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Chai Z, Yang PJ, Zhang H, Wang S, Yang G. Synthesis of Chiral Vicinal Diamines by Silver(I)-Catalyzed Enantioselective Aminolysis of N-Tosylaziridines. Angew Chem Int Ed Engl 2016; 56:650-654. [DOI: 10.1002/anie.201610693] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Zhuo Chai
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
| | - Pei-Jun Yang
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
| | - Hu Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
| | - Shaowu Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 P.R. China
| | - Gaosheng Yang
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
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6
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Chai Z, Yang PJ, Zhang H, Wang S, Yang G. Synthesis of Chiral Vicinal Diamines by Silver(I)-Catalyzed Enantioselective Aminolysis of N-Tosylaziridines. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201610693] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Zhuo Chai
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
| | - Pei-Jun Yang
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
| | - Hu Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
| | - Shaowu Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 P.R. China
| | - Gaosheng Yang
- Key Laboratory of Functional Molecular Solids, Ministry of Education; Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science; Anhui Normal University; 1 East Beijing Road Wuhu Anhui 241000 China
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Pyziak J, Walkowiak J, Marciniec B. Recent Advances in Boron-Substituted 1,3-Dienes Chemistry: Synthesis and Application. Chemistry 2016; 23:3502-3541. [DOI: 10.1002/chem.201602124] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Jadwiga Pyziak
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznań; Umultowska 89c 61-614 Poznań Poland
| | - Jędrzej Walkowiak
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznań; Umultowska 89c 61-614 Poznań Poland
| | - Bogdan Marciniec
- Centre for Advanced Technologies; Adam Mickiewicz University in Poznań; Umultowska 89c 61-614 Poznań Poland
- Faculty of Chemistry; Adam Mickiewicz University in Poznań; Umultowska 89c 61-614 Poznań Poland
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Lee E, Bang J, Kwon J, Yu CM. Enantioselective Synthesis of a Furan Lignan (+)-Sylvone. J Org Chem 2015; 80:10359-63. [DOI: 10.1021/acs.joc.5b01677] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eunhye Lee
- Department
of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Jiyun Bang
- Department
of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Jisook Kwon
- Department
of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Chan-Mo Yu
- Department
of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
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Bang J, Kim H, Kim J, Yu CM. Asymmetric Aldol Reaction of Allenoates: Regulation for the Selective Formation of Isomeric Allenyl or Alkynyl Aldol Adduct. Org Lett 2015; 17:1573-6. [DOI: 10.1021/acs.orglett.5b00454] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiyun Bang
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Hyuna Kim
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Jihyun Kim
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
| | - Chan-Mo Yu
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
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10
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Gold(I)-catalysed synthesis of cyclic sulfamidates: current scope, stereochemistry and competing ene-allene cycloisomerisation. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.058] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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11
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Wadsworth AD, Furkert DP, Brimble MA. Total synthesis of the macrocyclic N-Methyl enamides palmyrolide A and 2S-sanctolide A. J Org Chem 2014; 79:11179-93. [PMID: 25369466 DOI: 10.1021/jo502238r] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Full details of the total syntheses of the initially reported and revised structures of the neuroprotective agent palmyrolide A are reported. The key macrocyclization step was achieved using a sequential ring-closing metathesis/olefin isomerization reaction. Furthermore, the total synthesis of the related macrolide (2S)-sanctolide A is reported. The synthesis used key elements from the synthesis of palmyrolide A, including the RCM/olefin isomerization sequence. The synthetic work described herein serves to facilitate the assignment of stereochemistry of the natural product sanctolide A and demonstrates the utility of this approach for the synthesis of macrocyclic tertiary enamide natural products.
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Affiliation(s)
- Andrew D Wadsworth
- Maurice Wilkins Centre for Molecular Biodiscovery, School of Chemical Sciences, University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
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Kim J, Kim H, Kim N, Yu CM. Regulation of diastereoselectivity in the carbocyclization of allenyl (S)-N-tert-butylsulfinimines through a three-component assembly. J Org Chem 2014; 79:1040-6. [PMID: 24428493 DOI: 10.1021/jo4025072] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Allenyl sulfinimines can be stereoselectively cyclized with hexamethylditin under palladium catalysis conditions followed by a selection of additives for an activated transmetalation. Reactivity and diastereoselectivity for the cyclization strongly depend on the characteristics of additives. A highly diastereoselective synthesis of five-membered rings is achieved from the reaction of the corresponding allenyl (S)-N-tert-butylsulfinimies through the following sequence. After the distannylation of the allenyl group with hexamethylditin catalyzed by the Pd complex, stereochemical routes are additive dependent: addition of SnCl4 affords a cis ring exclusively, whereas a trans ring is formed predominantly by the introduction of B-bromocatecholborane. Extension of the methodology to the synthesis of six-membered cis rings is achieved by using B-bromocatecholborane. Stereochemical relationships of products were unambiguously deduced by X-ray crystallography.
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González JR, Soderquist JA. (E)-2-Boryl 1,3-Dienes from the 10-TMS-9-BBDs: Highly Selective Reagents for the Asymmetric Synthesis of anti-α,β-Disubstituted β-Allenylamines from the Allylboration of Aldimines. Org Lett 2014; 16:3840-3. [DOI: 10.1021/ol501892a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Javier R. González
- Department of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00931-3346
| | - John A. Soderquist
- Department of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00931-3346
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Kim H, Jin KY, Ha TH, Yu CM. A Convenient Method for the Synthesis of Allenoates from 4-Hydroxyalk-2-ynoates with PPh3. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.3.719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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