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1
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Zhang M, Xu P, Vendola AJ, Allais C, Dechert Schmitt AM, Singer RA, Morken JP. Stereocontrolled Pericyclic and Radical Cycloaddition Reactions of Readily Accessible Chiral Alkenyl Diazaborolidines. Angew Chem Int Ed Engl 2022; 61:e202205454. [PMID: 35587213 PMCID: PMC9296615 DOI: 10.1002/anie.202205454] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Indexed: 07/27/2023]
Abstract
In this paper is described an easily synthesized chiral diazaborolidine that is inexpensive, stable, and provides excellent stereoselection across a number of reaction classes. These versatile compounds possess utility in four different classes of cycloaddition reactions, offering good yield and stereoselectivity. X-ray structure analysis provides insight about the origin of stereocontrol.
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Affiliation(s)
- Mingkai Zhang
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, MA 02467, USA
| | - Peilin Xu
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, MA 02467, USA
| | - Alex J Vendola
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, MA 02467, USA
| | - Christophe Allais
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06430, USA
| | | | - Robert A Singer
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, CT 06430, USA
| | - James P Morken
- Department of Chemistry, Boston College, 2609 Beacon Street, Chestnut Hill, MA 02467, USA
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2
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Liu Y, Ni D, Stevenson BG, Tripathy V, Braley SE, Raghavachari K, Swierk JR, Brown MK. Photosensitized [2+2]-Cycloadditions of Alkenylboronates and Alkenes. Angew Chem Int Ed Engl 2022; 61:e202200725. [PMID: 35446458 DOI: 10.1002/anie.202200725] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Indexed: 12/17/2022]
Abstract
A new strategy for the synthesis of highly versatile cyclobutylboronates via the photosensitized [2+2]-cycloaddition of alkenylboronates and alkenes is presented. The process is mechanistically different from other processes in that energy transfer occurs with the alkenylboronate as opposed to the other alkene. This strategy allows for the synthesis of an array of diverse cyclobutylboronates. The conversion of these adducts to other compounds as well as their utility in the synthesis of melicodenine C is demonstrated.
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Affiliation(s)
- Yanyao Liu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Dongshun Ni
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Bernard G Stevenson
- Department of Chemistry, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
| | - Vikrant Tripathy
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Sarah E Braley
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
| | - John R Swierk
- Department of Chemistry, Binghamton University, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
| | - M Kevin Brown
- Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA
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3
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Zhang M, Xu P, Vendola AJ, Allais C, Dechert Schmitt A, Singer RA, Morken JP. Stereocontrolled Pericyclic and Radical Cycloaddition Reactions of Readily Accessible Chiral Alkenyl Diazaborolidines. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mingkai Zhang
- Department of Chemistry Boston College 2609 Beacon Street Chestnut Hill MA 02467 USA
| | - Peilin Xu
- Department of Chemistry Boston College 2609 Beacon Street Chestnut Hill MA 02467 USA
| | - Alex J. Vendola
- Department of Chemistry Boston College 2609 Beacon Street Chestnut Hill MA 02467 USA
| | - Christophe Allais
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06430 USA
| | | | - Robert A. Singer
- Pfizer Worldwide Research and Development Eastern Point Road Groton CT 06430 USA
| | - James P. Morken
- Department of Chemistry Boston College 2609 Beacon Street Chestnut Hill MA 02467 USA
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4
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Liu Y, Ni D, Stevenson BG, Tripathy V, Braley SE, Raghavachari K, Swierk JR, Brown MK. Photosensitized [2+2]‐Cycloadditions of Alkenylboronates and Alkenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yanyao Liu
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Dongshun Ni
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Bernard G. Stevenson
- Department of Chemistry Binghamton University 4400 Vestal Parkway East Binghamton NY 13902 USA
| | - Vikrant Tripathy
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Sarah E. Braley
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - Krishnan Raghavachari
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
| | - John R. Swierk
- Department of Chemistry Binghamton University 4400 Vestal Parkway East Binghamton NY 13902 USA
| | - M. Kevin Brown
- Department of Chemistry Indiana University 800 E. Kirkwood Ave. Bloomington IN 47401 USA
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Chauhan ANS, Mali G, Erande RD. Regioselectivity Switch Towards the Development of Innovative Diels‐Alder Cycloaddition and Productive Applications in Organic Synthesis. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amar Nath Singh Chauhan
- IIT Jodhpur: Indian Institute of Technology Jodhpur Chemistry Chemistry departmentIIT Jodhpur 342037 Jodhpur INDIA
| | - Ghanshyam Mali
- IIT Jodhpur: Indian Institute of Technology Jodhpur chemistry Chemistry departmentIIT Jodhpur 342037 Jodhpur INDIA
| | - Rohan D. Erande
- Indian Institute of Technology Jodhpur Chemistry Office 103, Department of Chemistry, IIT Jodhpur, N.H. 62, Nagaur Road, Karwar 342037 Jodhpur INDIA
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6
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Kanti Das K, Kumar P, Ghorai D, Mondal B, Panda S. Organoboron Compounds Towards Asymmetric Pericyclic Reaction; Exploitation to Bioactive Molecule Synthesis. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kanak Kanti Das
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Parveen Kumar
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Debraj Ghorai
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Buddhadeb Mondal
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
| | - Santanu Panda
- Department of Chemistry Indian Institute of Technology Kharagpur 721302 India
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