Herein, we report the redox‐neutral, intermolecular, and highly branch‐selectiveamidation of allylicC−H bonds enabled by Cp*IrIII catalysis. A variety of readily available carboxylic acids were converted into the corresponding dioxazolones and efficiently coupled with terminal and internal olefins in high yields and selectivities. Mechanistic investigations support the formation of a nucleophilic
在本文中,我们报道了由Cp * Ir III催化实现的烯丙基CH键的氧化还原中性,分子间和高度分支选择性酰胺化。将各种容易获得的羧酸转化为相应的二恶唑酮,并以高收率和选择性将其与末端和内部烯烃有效偶联。机理研究支持亲核性Ir III-烯丙基中间体的形成,而不是将Ir-nitrenoid物种直接插入烯丙基CH键中。
Double-Chelation-Assisted Rh-Catalyzed Intermolecular Hydroacylation between Salicylaldehydes and 1,4-Penta- or 1,5-Hexadienes
Intermolecularhydroacylation between salicylaldehydes 1, 26−40 and 1,4-penta- or 1,5-hexadienes 4−13 by Rh-catalyst proceeded under mild reaction conditions to give a mixture of iso- and normal-hydroacylated products 14−25, 41−55, and 57−60. In the hydroacylationreaction, chelation of both salicylaldehyde and diene to the Rh-complex plays a crucial role. The ratio of iso- and normal-hydroacylated
Novel benzamide derivatives of formula (I) wherein W1, W2, R1 to R7, R6, X and Y have the meaning according to the claims, are positive allosteric modulators of the FSH receptor, and can be employed, inter alia, for the treatment of fertility disorders.
COALESCING AGENT DERIVED FROM DIOXOLANE DERIVATIVES
申请人:PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED
公开号:US20190194157A1
公开(公告)日:2019-06-27
The present invention relates to a coalescing agent as represented in structure (I); wherein; n is integer from 1 to 8; R
1
and R
2
independently represent group selected from hydrogen atom, alkyl, alkenyl, alkynyl, phenyl, benzyl groups, or optionally cyclic hydrocarbon containing heteroatom; and Y represents group selected from alkyl, alkenyl, alkynyl, phenyl, benzyl groups, or cyclic hydrocarbon containing heteroatom. The said coalescing agent can be used in coating application with efficacy to provide smooth consistent film with chemical and scratch resistant and has no pungent odour, wherein the preparation method of this compound is simplify and employs less harmful chemicals.
[reaction: see text] Rh-Catalyzed intermolecularhydroacylation between salicylaldehydes and 1,5-hexadienes proceeded under remarkably mild reaction conditions to afford a mixture of iso- and normal-hydroacylated products in good yields. The experiments using deuterated salicylaldehyde-d revealed that "double chelation" of salicylaldehyde and 1,5-hexadiene to Rh-complex played vital roles in the catalytic