Conversion of a Ketone to a Geminal Bisacetamide: Synthesis of 1,1-Bisacetamidocyclohexane
摘要:
The synthesis of the title compound (6) is described. A key step in the novel sequence is the Hofmann rearrangement of an alpha,alpha-dialkyl-alpha-aminocarboxamide mediated by hypervalent iodine reagent.
Ruthenium‐Catalyzed Deaminative Hydrogenation of Amino Nitriles: Direct Access to 1,2‐Amino Alcohols
作者:Pilar Calleja、Martin Ernst、A. Stephen K. Hashmi、Thomas Schaub
DOI:10.1002/chem.201900531
日期:2019.7.17
approach for the efficient and highly selective synthesis of 1,2‐amino alcohols by direct reductive hydrolysis of N‐formyl‐protected α‐amino nitriles is reported. The commercially available RuHCl(CO)(PPh3)3 complex was found to be a suitable catalyst for this operationally simple protocol, in which no stoichiometric amounts of undesired metal waste are generated. The deaminative hydrogenation is performed
报道了一种通过N-甲酰基保护的α-氨基腈直接还原水解来高效,高选择性合成1,2-氨基醇的新方法。发现可商购获得的RuHCl(CO)(PPh 3)3络合物对于该操作简单的方案是合适的催化剂,其中不产生化学计量的不希望的金属废物。脱氨氢化反应在55 bar H 2下进行,使用1,4-二恶烷/水的6:1混合物作为溶剂。另外,在非常相似的条件下由氰基酮制备羟甲基醇。
[EN] PROCESS FOR PRODUCING SUBSTITUTED AMINO ALCOHOLS<br/>[FR] PROCÉDÉ DE PRODUCTION D'AMINO-ALCOOLS SUBSTITUÉS
申请人:BASF SE
公开号:WO2020094454A1
公开(公告)日:2020-05-14
The present invention relates to a process for producing a compound of the formula (I) comprising at least the process step: a) reacting a compound of the formula (II) with hydrogen and water in the presence of at least one homogeneous transition metal catalyst TMC 1.
Expanding Synthesizable Space of Disubstituted 1,2,4-Oxadiazoles
作者:Andrey Tolmachev、Andrey V. Bogolubsky、Sergey E. Pipko、Alexander V. Grishchenko、Dmytro V. Ushakov、Anton V. Zhemera、Oleksandr O. Viniychuk、Anzhelika I. Konovets、Olga A. Zaporozhets、Pavel K. Mykhailiuk、Yurii S. Moroz
DOI:10.1021/acscombsci.6b00103
日期:2016.10.10
One-pot synthesis of 3,5-disubstituted 1,2,4-oxadiazoles from carboxylic acids and nitriles was optimized to parallel chemistry. The method was validated on a 141 member library; the desired products were recovered with a high success rate and in moderate yields. Practical application of the approach was demonstrated in the synthesis of bioactive compound pifexole and agonists of free fatty acid receptor