Double Arylation of Allyl Alcohol via a One-Pot Heck Arylation–Isomerization–Acylation Cascade
摘要:
A one-pot, two-step catalytic protocol has been developed. A regloselective Heck coupling between aryl bromides and allyl alcohol leads to the generation of arylated allyl alcohols that in situ isomerize to give aldehydes, which then undergo an acylation reaction with a second aryl bromide. A variety of aryl bromides can be employed in both the initial Heck reaction and the acylation, providing easy access to a wide variety of substituted dihydrochalcones.
Double Arylation of Allyl Alcohol via a One-Pot Heck Arylation–Isomerization–Acylation Cascade
摘要:
A one-pot, two-step catalytic protocol has been developed. A regloselective Heck coupling between aryl bromides and allyl alcohol leads to the generation of arylated allyl alcohols that in situ isomerize to give aldehydes, which then undergo an acylation reaction with a second aryl bromide. A variety of aryl bromides can be employed in both the initial Heck reaction and the acylation, providing easy access to a wide variety of substituted dihydrochalcones.
Photoexcited Ni<sup>II</sup>–Aryl Complex-Mediated Giese Reaction of Aryl Bromides
作者:Xian-Chen He、Ke-Rong Li、Jie Gao、Jian-Ping Guan、Hong-Bin Chen、Hao-Yue Xiang、Kai Chen、Hua Yang
DOI:10.1021/acs.orglett.3c01219
日期:2023.6.9
Giese reaction of aryl bromides with electron-deficient alkenes was developed, enabled by a dual catalyst system containing NiII complex and IrIII photocatalyst. This protocol could accommodate a variety of aryl bromides and electron-deficient alkenes, delivering the conjugate adducts in up to 97% yield. The utilization of photoexcited (dtbbpy)NiII(aryl)Br intermediate as an aryl radical source allows
开发了芳基溴化物与缺电子烯烃的 Giese 反应,该反应由包含 Ni II络合物和 Ir III光催化剂的双催化剂体系实现。该协议可以容纳各种芳基溴化物和缺电子烯烃,以高达 97% 的产率提供共轭加合物。利用光激发的 (dtbbpy)Ni II (芳基)Br 中间体作为芳基自由基源,可以实现芳基卤化物的这种新型转化,从而扩大激发镍催化的化学空间。
TAXOID REVERSAL AGENTS FOR DRUG-RESISTANCE IN CANCER CHEMOTHERAPY AND PHARMACEUTICAL COMPOSITIONS THEREOF
申请人:THE RESEARCH FOUNDATION OF
STATE UNIVERSITY OF NEW YORK
公开号:EP0966456B1
公开(公告)日:2003-04-02
EP0966456A4
申请人:——
公开号:EP0966456A4
公开(公告)日:2000-07-26
US5811452A
申请人:——
公开号:US5811452A
公开(公告)日:1998-09-22
[EN] TAXOID REVERSAL AGENTS FOR DRUG-RESISTANCE IN CANCER CHEMOTHERAPY AND PHARMACEUTICAL COMPOSITIONS THEREOF<br/>[FR] AGENTS TAXOIDES CONTRECARRANT LA PHARMACO-RESISTANCE DANS LA CHIMIOTHERAPIE DU CANCER ET PREPARATIONS PHARMACEUTIQUES LES CONTENANT
申请人:THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
公开号:WO1998030553A1
公开(公告)日:1998-07-16
(EN) The present invention is directed to novel taxoids possessing strong reversing activities for drug-resistance associated with anti-cancer agents, the preparation of these reversal agents and pharmaceutical compositions thereof. The new taxoids of the present invention have formula (I).(FR) L'invention porte sur de nouveaux taxoïdes présentant de fortes activités contrecarrant la pharmaco-résistance liée aux agents anticancéreux, sur la préparation de ces taxoïdes, et sur des préparations pharmaceutiques les contenant. Lesdits taxoïdes sont représentés par la formule (I).