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Malykhin RS, Boyko YD, Nelyubina YV, Ioffe SL, Sukhorukov AY. Interrupted Nef Reaction of Cyclic Nitronates: Diastereoselective Access to Densely Substituted α-Chloronitroso Compounds. J Org Chem 2022; 87:16617-16631. [DOI: 10.1021/acs.joc.2c02281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Roman S. Malykhin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991, Leninsky prospect, 47, Moscow, Russian Federation
- Department of Chemistry, M. V. Lomonosov Moscow State University, 119991, Leninskie gory, 1, str. 3, Moscow, Russian Federation
| | - Yaroslav D. Boyko
- UIUC: Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, United States
| | - Yulia V. Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991, Vavilova str. 28, Moscow, Russian Federation
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991, Leninsky prospect, 47, Moscow, Russian Federation
| | - Alexey Yu. Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991, Leninsky prospect, 47, Moscow, Russian Federation
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Ushakov PY, Ioffe SL, Sukhorukov AY. Regio- and diastereoselective access to densely functionalized ketones via the Boekelheide rearrangement of isoxazoline N-oxides. Org Biomol Chem 2022; 20:5624-5637. [PMID: 35796681 DOI: 10.1039/d2ob00787h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In this work, the classical "isoxazoline route" toward aldols involving the [3 + 2]-cycloaddition of nitrile oxide to alkenes and hydrogenolysis of the oxime group was revisited. To avoid regioselectivity issues, [4 + 1]-annulation of nitroalkenes with sulfonium ylides was used to construct the isoxazoline ring bearing an N-oxide moiety. Subsequent deoxygenative C-H functionalization using the Boekelheide rearrangement and hydrogenolysis of the isoxazoline ring afforded α'-acyloxy-substituted aldols, which are difficult to access both by the classical aldol reaction and the "isoxazoline route". The products are formed in good to high overall yields and as single diastereomers in most cases. The synthetic use of these aldols was showcased by their smooth transformation into diastereomerically pure triols and a 2,3-diaryl-4-hydroxy-substituted tetrahydrofuran derivative, which is structurally related to cinncassin B.
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Affiliation(s)
- Pavel Yu Ushakov
- N. D. Zelinsky Institute of Organic Chemistry, 119991, Leninsky prospect, 47, Moscow, Russian Federation.
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, 119991, Leninsky prospect, 47, Moscow, Russian Federation.
| | - Alexey Yu Sukhorukov
- N. D. Zelinsky Institute of Organic Chemistry, 119991, Leninsky prospect, 47, Moscow, Russian Federation.
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Hua TB, Ma YH, He XY, Wang L, Yan JY, Yang QQ. A formal [4 + 1] cycloaddition reaction of Baylis–Hillman bromides with sulfur ylides: facile access to α-alkenyl lactones. Org Chem Front 2022. [DOI: 10.1039/d2qo00451h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A formal [4 + 1] cycloaddition reaction of Baylis–Hillman adducts with sulfur ylides has been developed for the first time.
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Affiliation(s)
- Ting-Bi Hua
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China
| | - Yu-Hong Ma
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China
| | - Xiao-Yu He
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China
| | - Long Wang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China
- Hubei Three Gorges Laboratory, Yichang, Hubei 443007, China
| | - Jia-Ying Yan
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China
- Hubei Three Gorges Laboratory, Yichang, Hubei 443007, China
| | - Qing-Qing Yang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, 8 Daxue Road, Yichang, Hubei 443002, China
- Hubei Three Gorges Laboratory, Yichang, Hubei 443007, China
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Chalyk BA, Khutorianskyi AV, Vashchenko BV, Danyleiko K, Grynyova A, Osipova AO, Kozytskiy A, Syniuchenko D, Tsymbaliuk A, Gavrilenko KS, Biitseva AV, Volochnyuk DM, Komarov IV, Grygorenko OO. Reductive Recyclization of sp 3-Enriched Functionalized Isoxazolines into α-Hydroxy Lactams. J Org Chem 2021; 87:1001-1018. [PMID: 34843235 DOI: 10.1021/acs.joc.1c02301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient synthesis (up to a 200 g scale) of 3-hydroxypyrrolidin-2-ones bearing alkyl substituents or functional groups at the C-5 position is described. The reaction sequence started from 1,3-dipolar cycloaddition of in situ generated nitrile oxides with (meth-)acrylates into 3-substituted isoxazoline-5-carboxylates. The catalytic hydrogenolysis of the isoxazoline N-O bond was optimal upon using H2 (1 atm) at rt, with the following order of the catalyst activity: Pd-C > Pd(OH)2-C > Pt-C. The reactions with Pt-C were more selective for the synthesis of pyrrolidones, while Pd-C provided the fastest conversion rates. The stirring efficiency had a positive impact on conversion rather than elevated temperatures (up to 40 °C) or pressure (up to 50 atm). The diastereoselectivity was governed mainly by steric factors, with a dr of 1:1 to 3:1 (cis- and trans-isomers could be separated). Higher homologues (isoxazolinylacetates and -propanoates) were suitable for the synthesis of 6- or 7-substituted 4-hydroxypiperidones and 5-hydroxyazepanones, respectively. The proposed methods are tolerant to functional groups, including CF3 (but not CHF2 or CH2Cl), ester, and most N-Boc-protected amines. The utility of hydroxyl groups in lactams was shown by functional group transformations. Hydrogenolysis of C(5)-functionalized isoxazolines, bearing trimethylsilyl, phosphonate, or sulfone groups, was also studied to demonstrate limitations.
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Affiliation(s)
- Bohdan A Chalyk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02094, Ukraine
| | - Andrii V Khutorianskyi
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Bohdan V Vashchenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Kyrylo Danyleiko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Anastasiia Grynyova
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02094, Ukraine.,Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine
| | - Anastasiia O Osipova
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Andriy Kozytskiy
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,L. V. Pisarzhevskii Institute of Physical Chemistry of National Academy of Sciences of Ukraine, Nauky Avenue, 31, Kyiv 03028, Ukraine
| | - Darya Syniuchenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Anton Tsymbaliuk
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Konstantin S Gavrilenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Angelina V Biitseva
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Dmitriy M Volochnyuk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02094, Ukraine.,Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Igor V Komarov
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
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