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Maverick MA, Gaillard M, Vasseur J, Debart F, Smietana M. Direct Access to Unique C‐5’‐Acyl Modified Nucleosides through Liebeskind–Srogl Cross‐Coupling Reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mary Anne Maverick
- Institut des Biomolécules Max Mousseron Université de Montpellier CNRS ENSCM 1919, route de Mende 34293 Montpellier
| | - Marie Gaillard
- Institut des Biomolécules Max Mousseron Université de Montpellier CNRS ENSCM 1919, route de Mende 34293 Montpellier
| | - Jean‐Jacques Vasseur
- Institut des Biomolécules Max Mousseron Université de Montpellier CNRS ENSCM 1919, route de Mende 34293 Montpellier
| | - Françoise Debart
- Institut des Biomolécules Max Mousseron Université de Montpellier CNRS ENSCM 1919, route de Mende 34293 Montpellier
| | - Michael Smietana
- Institut des Biomolécules Max Mousseron Université de Montpellier CNRS ENSCM 1919, route de Mende 34293 Montpellier
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Le VD, Dang CH, Nguyen CH, Nguyen HU, Nguyen TD. Synthesis of β-Methyl Alcohols: Influence of Alkyl Chain Length on Diastereoselectivity and New Attractants of Rhynchophorus ferrugineus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5882-5886. [PMID: 34028273 DOI: 10.1021/acs.jafc.1c01875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The diastereoselectivity of adducts in the addition reaction via the Felkin-Anh model is affected significantly by the steric effect of bulky groups. However, the influence of steric alkyl chain length has not been studied for the diastereoselectivity. In this work, we present a new strategy for the racemic synthesis of β-methyl alcohols to obtain various diastereomer ratios using the Felkin-Anh model. The addition of alkyl Grignard reagents to α-methyl aldehydes afforded diastereomer ratios of threo/erythro ≈ 2:1, while the reduction in structurally related ketones using LiAlH4 afforded ratios of threo/erythro ≈ 1:1. The experimental data showed no effect of alkyl chain length on either side on the stereoselectivity of adducts. All synthesized analogues were evaluated for attractiveness to Rhynchophorus ferrugineus weevils in the field. Five novel derivatives, including two alcohols and three ketones, were found to attract weevils in the field trials. Among them, 3-methyldecan-4-one (5b) and 4-methyldecan-5-ol (11a) were found to be the most attractive to the insects.
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Affiliation(s)
- Van-Dung Le
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29, District 12, Ho Chi Minh City 70000, Vietnam
| | - Chi-Hien Dang
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29, District 12, Ho Chi Minh City 70000, Vietnam
| | - Cong-Hao Nguyen
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29, District 12, Ho Chi Minh City 70000, Vietnam
| | - Hong-Ung Nguyen
- Department of Agriculture and Aquaculture, Tra Vinh University, 126 Nguyen Thien Thanh Street Ward 5, Tra Vinh City 87000, Vietnam
| | - Thanh-Danh Nguyen
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam
- Institute of Chemical Technology, Vietnam Academy of Science and Technology, 1A, TL29, District 12, Ho Chi Minh City 70000, Vietnam
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Bhatt SV, Bhatt SV, Fotie J. Pt-catalyzed O-silylation of oximes by tri-substituted organosilanes. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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