Synthesis of Borylated Carbocycles by [2 + 2]-Cycloadditions and Photo-Ene Reactions
作者:Jarett M. Posz、Neetu Sharma、Paige A. Royalty、Yanyao Liu、Christophe Salome、Thomas C. Fessard、M. Kevin Brown
DOI:10.1021/jacs.4c01557
日期:2024.4.10
agrochemicals and pharmaceuticals. Here, we present the synthesis of borylated bicyclo[2.1.1]hexanes via crossed [2 + 2]-cycloaddition. Due to the presence of the C–B bond, a variety of structures can be easily prepared that are not accessible by other methods. Moreover, a rare photo-ene reaction is also disclosed, allowing for the diastereoselective synthesis of trisubstituted borylated cyclopentanes.
A solubilized steviol glycoside composition including one or more steviol glycosides and one or more steviol glycoside solubility enhancers can be used as a sweetener composition to sweeten other compositions (sweetenable compositions) such as foods, beverages, medicines, oral hygiene compositions, pharmaceuticals, nutraceuticals, and the like.
Julia,M.; Descoins,C., Bulletin de la Societe Chimique de France, 1962, p. 1933 - 1939
作者:Julia,M.、Descoins,C.
DOI:——
日期:——
Regio- and Enantioselective Catalytic δ-C–H Amidation of Dioxazolones Enabled by Open-Shell Copper-Nitrenoid Transfer
作者:Suhyeon Kim、Se Lin Song、Jianbo Zhang、Dongwook Kim、Sungwoo Hong、Sukbok Chang
DOI:10.1021/jacs.3c05258
日期:2023.7.26
>19:1 rr and >99:1 er). Combined experimental and computational mechanistic studies unveiled that the open-shell character of the postulated Cu-nitrenoids enables the regioselective hydrogen atom abstraction and subsequent enantio-determining radical rebound of the resulting carbon radical intermediates. The synthetic utility of this asymmetric cyclization was demonstrated in the diastereoselective introduction