A H3PO3-catalyzed alkylation of phenols with alkenes is achieved in a facile, efficient, and selective manner. The reaction shows a unique selectivity, i.e., excellent regioselectivity, thorough suppression of overalkylation, without alkylation of a simple phenyl ring, and can selectively provide ortho-, meta-, or para-alkylated phenol derivatives in good to excellent yields. This feature along with
AH 3 PO 3催化的苯酚与烯烃的烷基化反应以简便,有效和选择性的方式实现。该反应显示出独特的选择性,即优异的区域选择性,彻底抑制了过度烷基化,而没有简单的苯环烷基化,并且可以有选择地提供邻位,间位或对位烷基化的苯酚衍生物,收率良好至优异。此功能以及温和的反应条件,敏感的官能团耐受性以及酚类生物活性化合物的按比例放大合成和后期修饰,使其成为酚类修饰的理想且实用的替代品。
Polybutylbenzylphenols and benzyl-3,4-methylenedioxbenzenes in insect
申请人:The United States of America as represented by the Secretary of
公开号:US04482728A1
公开(公告)日:1984-11-13
Certain polybutylbenzylphenols and benzyl-3,4-methylenedioxybenzenes are useful for insect control especially as insect chemosterilants and oviposition inhibitors. The benzyl-3,4-methylenedioxybenzenes also find utility as growth inhibitors for mosquito larvae.
Polybutylbenzylphenols and benzyl-3,4-methylenedioxybenzenes in insect
申请人:The United States of America as represented by the Secretary of
公开号:US04342777A1
公开(公告)日:1982-08-03
Certain polybutylbenzylphenols and benzyl-3,4-methylenedioxybenzenes are useful for insect control especially as insect chemosterilants and oviposition inhibitors. The benzyl-3,4-methylenedioxybenzenes also find utility as growth inhibitors for mosquito larvae.