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排序方式: 共有496条查询结果,搜索用时 15 毫秒
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Yuanyuan Ping Yuxiu Li Jieping Zhu Wangqing Kong 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(6):1576-1587
The enantioselective synthesis of molecules containing quaternary stereocenters is a field of intense research interest and development. Among the known organic transformations, carbopalladation‐initiated domino transformations constitutes a general method for the construction of compounds containing cyclic or spiro quaternary stereocenters. In this Minireview, recent achievements in palladium‐catalyzed domino Heck/C?H functionalizations and developments in enantioselective carbopalladation‐initiated domino processes are summarized. 相似文献
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Jos Enrique Gmez lex Cristfol Arjan W. Kleij 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(12):3943-3947
Tertiary propargylic sulfones are of significant importance in organic synthesis and medicinal chemistry, but to date no general asymmetric synthesis approach has been developed. We disclose a versatile copper‐catalyzed sulfonylation of propargylic cyclic carbonates using sodium sulfinates that allows the construction of propargylic sulfones featuring elusive quaternary stereocenters. This method provides the first successful example of such an enantioselective propargylic sulfonylation, features high asymmetric induction, wide functional group tolerance, and scalability, and enables attractive product diversification. 相似文献
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We propose a list of open problems in pluripotential theory partially motivated by their applications to complex differential geometry. The list includes both local questions as well as issues related to the compact complex manifold setting. 相似文献
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Marcus A. Khuri 《Nonlinear Analysis: Theory, Methods & Applications》2011,74(17):6405-6415
In this paper we outline a general method for finding well-posed boundary value problems for linear equations of mixed elliptic and hyperbolic type, which extends previous techniques of Berezanskii, Didenko, and Friedrichs. This method is then used to study a particular class of fully nonlinear mixed type equations which arise in applications to differential geometry. 相似文献
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John Urbas 《Proceedings of the American Mathematical Society》2000,128(3):853-855
We give a simple proof of a result of Xinan Ma concerning a necessary condition for the solvability of the two-dimensional Monge-Ampère equation subject to the contact angle or capillarity boundary condition. Our technique works for more general Monge-Ampère equations in any dimension, and also extends to some other boundary conditions.
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