Reductive cross-coupling of aryl halides with ubiquitous alkyl tosylates was developed using a combination of nickel and vitamin B12 catalysts. The tosylate was activated by reduced vitamin B12 to form alkyl cobalt(III) which served as a good alkylating agent for aryl-nickel species, leading to the C(sp3)–C(sp2) bond formation.
Regioselective Rhodium(I)-Catalyzed Hydroarylation of Protected Allylic Amines with Arylboronic Acids
作者:Gavin Chit Tsui、Frederic Menard、Mark Lautens
DOI:10.1021/ol100974f
日期:2010.6.4
A novel regioselective rhodium(I)-catalyzed hydroarylation of unactivated alkenes with arylboronicacids is described. The catalytic system employs [Rh(COD)OH]2 and BINAP to effect the addition of various arylboronicacids to protected allylic amines. The regioselectivity was found to be highly dependent on the protecting group, favoring the linear addition product with up to 92% yield and >20:1 regioselectivity
Nickel-Mediated Inter- and Intramolecular Reductive Cross-Coupling of Unactivated Alkyl Bromides and Aryl Iodides at Room Temperature
作者:Chang-Song Yan、Yu Peng、Xiao-Bo Xu、Ya-Wen Wang
DOI:10.1002/chem.201200190
日期:2012.5.7
A nickel‐mediated intermolecular reductivecross‐coupling reaction of unactivated alkyl bromides and aryl iodides at room temperature has been developed and successfully extended to less explored intramolecular versions and tandem cyclization‐intermolecular cross‐coupling. Highly stereoselective (or stereospecific) synthesis of linear‐fused perhydrofuro[2,3‐b]furan (pyran) and spiroketal skeletons
已开发出室温下未活化的烷基溴和芳基碘的镍介导的分子间还原性交叉偶联反应,并成功地扩展到较少探索的分子内版本和串联环化-分子间交叉偶联。线性稠合的全氢呋喃[2,3- b ]呋喃(吡喃)和螺环骨架的高度立体选择性(或立体定向)合成可以快速获得这些有用的结构单元,这在相关天然产物的合成中可能具有潜在的价值。给出了形成连续立体中心的合理解释。
SUBSTITUTED IMIDES AS TNF INHIBITORS
申请人:CELGENE CORPORATION
公开号:EP0800514A1
公开(公告)日:1997-10-15
[EN] SUBSTITUTED IMIDES AS TNF INHIBITORS<br/>[FR] IMIDES SUBSTITUES UTILES COMME INHIBITEURS DU FACTEUR DE NECROSE TUMORALE
申请人:——
公开号:WO1996020926A1
公开(公告)日:1996-07-11
[EN] Novel imides are inhibitors of tumor necrosis factor alpha and can be used to combat cachexia, endotoxic shock, and retrovirus replication. A typical embodiment is 2-Phthalimido-3-(3',4'-dimethoxyphenyl)propane. [FR] Des imides nouveaux inhibent le facteur alpha de nécrose tumorale et sont utiles pour combattre la cachexie, le choc endotoxique et la réplication rétrovirale. Un mode de réalisation typique est le 2-phtalimido-3-(3',4'-diméthoxyphényl)propane.