An unprecedented MnI/AgI‐relay‐catalyzed C(sp2)−H/C(sp3)−H coupling of (vinyl)arenes with α‐diazoketones is reported, wherein the diazo group was exploited as a traceless auxiliary for control of regioselectivity. Challenging β‐(hetero)aryl/alkenyl ketones were obtained through this operationally simple approach. The cascade process merges denitrogenation, carbene rearrangement, C−H activation, and
据报道,前所未有的Mn I / Ag I中继催化(乙烯基)芳烃与α-重氮酮的C(sp 2)-H / C(sp 3)-H偶联,其中重氮基被用作无痕助剂控制区域选择性。具有挑战性的β-(杂)芳基/烯基酮是通过这种操作简单的方法获得的。级联过程合并了脱氮,卡宾重排,CH活化和加氢芳基化/加氢烯基化。该方法的鲁棒性已在制备规模上得到证明,并应用于天然产物的后期多样化。
Palladium-Catalyzed Cross-Coupling Reaction of Diazo Compounds and Vinyl Boronic Acids: An Approach to 1,3-Diene Compounds
作者:Yamu Xia、Ying Xia、Zhen Liu、Yan Zhang、Jianbo Wang
DOI:10.1021/jo5012703
日期:2014.8.15
A palladium-catalyzed oxidative cross-coupling of vinyl boronic acids and cyclic α-diazocarbonyl compounds has been reported. The reaction constitutes an efficient method for the synthesis of 1,3-diene compounds bearing a ring structure. Mechanistically, the reaction involves migratory insertion of palladium carbene as the key step.
Deep UV photoresist with alkyl 2-diazo-1-ones as solubility modification
申请人:J. T. Baker, Inc.
公开号:US04959293A1
公开(公告)日:1990-09-25
2-diazo-1-ones are useful deep UV photoresist solubility modification agents exhibiting improved photosensitivity allowing shorter deep UV exposure times to achieve the same extent of photoreaction as with prior art solubility modification agents. The 2-diazo-1-one solubility modification agents when used as photoactive solubility modification components in photoresist compositions permit the photoresist compositions to act as either positive or negative photoresist compositions depending upon the developer employed, namely, as a positive resist when a metal ion containing developer is employed and as a negative resist when a metal ion free developer is employed.