Seminormal-BrCH<sub>2</sub>CH<sub>2</sub>OH-mediated electrochemical epoxidation of unactivated olefins
作者:Hong He、Yanxia Lv、Jing Hu、Zhong-Wei Hou、Lei Wang
DOI:10.1039/d3gc04061e
日期:——
An electrochemical epoxidation of unactivated olefins using water as the source of oxygen atoms has been developed. The epoxidation reaction employs seminormal-BrCH2CH2OH as the mediator, which shows good functional group compatibility, and can easily be performed on the gram scale. A wide range of unactivated olefins could be tolerated to give the functionalized epoxides with satisfactory results
The present invention provides a photoresist composition containing: a resin which contains a structural unit derived from a compound having an acid-labile group and which is insoluble or poorly soluble in an alkali aqueous solution but becomes soluble in an alkali aqueous solution by the action of an acid; an acid generator and a compound represented by the formula (I):
wherein R
1
, X
1
, R
2
, u1, s1, t1 are each defined in the specification, with the proviso that sum of s1 and t1 is 1 or 2.
US8753795B2
申请人:——
公开号:US8753795B2
公开(公告)日:2014-06-17
Direct Epoxidation of Olefins Catalyzed by Nickel(II) Complexes with Molecular Oxygen and Aldehydes
In the presence of a bis(1,3-diketonato)nickel(II) complex, various olefins are directly monooxygenated into the corresponding epoxides on treatment with atmospheric pressure of oxygen or air and aldehydes. Especially, it is noted that bis[1,3-bis(p-methoxyphenyl)-1,3-propanedionato]nickel(II) behaves as an excellent catalyst in the present epoxidation.
In the presence of a catalytic amount of bis(3-methyl-2,4-pentanedionato)nickel(II) (Ni(mac)2), various glycidyl esters are converted into the corresponding glycerol monoester derivatives with molecular oxygen in good to high yields.