Potassium <i>tert</i>-Butoxide-Mediated Condensation Cascade Reaction: Transition Metal-Free Synthesis of Multisubstituted Aryl Indoles and Benzofurans
作者:Pengfei Yang、Weiyan Xu、Rongchao Wang、Min Zhang、Chunsong Xie、Xiaofei Zeng、Min Wang
DOI:10.1021/acs.orglett.9b01093
日期:2019.5.17
tert-butoxide-mediated condensation reactioninvolving a vinyl sulfoxide intermediate. Products are obtained from N- or O-benzyl benzaldehydes using dimethyl sulfoxide as a carbon source. The methodology features a wide functional group tolerance and transition metal-free environment. Preliminary mechanistic studies suggest that the reactioninvolves a tandem aldol reaction/Michaeladdition/dehydrosulfenylation/isomerization
Soil release polymers with fluorescent whitening properties
申请人:The Procter & Gamble Company
公开号:US05728671A1
公开(公告)日:1998-03-17
Oligomeric or polymeric substituted or unsubstituted ethylene terephthalate esters comprising fluorescent whitening groups useful as soil release agents in laundry detergent compositions are described. The soil release agents of the present invention are especially suitable for use with polyester and polyester-blended fabric.