Ni-Catalyzed Arylboration of Unactivated Alkenes: Scope and Mechanistic Studies
作者:Stephen R. Sardini、Alison L. Lambright、Grace L. Trammel、Humair M. Omer、Peng Liu、M. Kevin Brown
DOI:10.1021/jacs.9b03991
日期:2019.6.12
unactivated monosubstituted, 1,1-disubstituted, and trisubstituted alkenes is disclosed. The reaction is notable in that it converts highly substituted alkenes, aryl bromides, and diboron reagents to products that contain a quaternary carbon and a synthetically versatile carbon-boron bond with control of stereoselectivity and regioselectivity. In addition, the method is demonstrated to be useful for the
[EN] SUBSTITUTED SPIROCYCLIC AMINES USEFUL AS ANTIDIABETIC COMPOUNDS<br/>[FR] AMINES SPIROCYCLIQUES SUBSTITUÉES UTILES EN TANT QUE COMPOSÉS ANTIDIABÉTIQUES
申请人:MERCK SHARP & DOHME
公开号:WO2010129729A1
公开(公告)日:2010-11-11
Substituted spirocyclic amines of structural formula I are selective antagonists of the somatostatin subtype receptor 5 (SSTR5) and are useful for the treatment, control or prevention of disorders responsive to antagonism of SSTR5, such as Type 2 diabetes, insulin resistance, lipid disorders, obesity, atherosclerosis, metabolic syndrome, depression, and anxiety.
Carbo-Carboxylation of Alkenes via Intramolecular Heck Carbonylation Utilizing CO<sub>2</sub> and Hydrosilane
作者:Meng-Meng Wang、Sheng-Mei Lu、Can Li
DOI:10.1021/acscatal.2c03478
日期:2022.9.2
carbo-carboxylation of alkenes has been achieved using an easily accessible Pd/monophosphine ligand combination as the catalyst. This protocol provides competent access to construct a series of 2,3-dihydrobenzofurans, chromans, isochroman, indanes and tetralins bearing a β-acid moiety in moderate to excellent yield. Additionally, the example of domino carbo-carbonylation reactions has been demonstrated
从由 CO 2和 PMHS(聚甲基氢硅氧烷)原位形成的多种烯烃束缚芳基卤化物和甲酸甲硅烷酯开始,使用易于获得的 Pd/单膦配体组合作为催化剂实现烯烃的碳羧化。该协议提供了构建一系列 2,3-二氢苯并呋喃、色满、异色满、茚满和四氢萘的能力,这些产品具有中等至极好的产量。此外,多米诺碳羰基化反应的例子已被证明使用二烯束缚芳基碘化物作为起始材料,以良好的收率形成含氧双环产物。推测烯烃的碳羧化反应通过碳甲硅烷氧基羰基化途径进行。
SUBSTITUTED SPIROCYCLIC AMINES USEFUL AS ANTIDIABETIC COMPOUNDS