4676-51-1Relevant articles and documents
Cyanide-Coordination Effect on Photochemical Carbon-Skeleton Rearrangements of Alkyl Ligands Coordinated to Vitamin B12 Model Complexes
Murakami, Yukito,Hisaeda, Yoshio,Ozaki, Toshiaki,Ohno, Terubisa,Fan, Sheng-Di,Matsuda, Yoshihisa
, p. 839 - 842 (1988)
The cyanide ion induced the heterolytic cleavage of the cobalt-carbon bond involved in vitamin B12 model complexes by its coordination to the central cobalt atom and enhanced the carbon-skeleton rearrangements via formation of anionic intermedi
Preparation method and application of sacubitril intermediate
-
, (2021/07/17)
The invention discloses a preparation method and application of a sacubitril intermediate. The sacubitril intermediate disclosed by the invention is obtained by taking itaconic anhydride as a raw material, performing chiral reduction, esterification, selective hydrolysis and carboxyl activation, and finally conducting coupling with 4-biphenylacetic acid. The invention also provides a method for preparing sacubitril by using the sacubitril intermediate. The preparation method provided by the invention has the advantages of easily available raw materials, simple process, economy, environmental protection and the like, and is more suitable for industrial production compared with other routes.
Diastereo- and Enantioselective Synthesis of Fluorine Motifs with Two Contiguous Stereogenic Centers
Ponra, Sudipta,Rabten, Wangchuk,Yang, Jianping,Wu, Haibo,Kerdphon, Sutthichat,Andersson, Pher G.
, p. 13878 - 13883 (2018/10/24)
The synthesis of chiral fluorine containing motifs, in particular, chiral fluorine molecules with two contiguous stereogenic centers, has attracted much interest in research due to the limited number of methods available for their preparation. Herein, we report an atom-economical and highly stereoselective synthesis of chiral fluorine molecules with two contiguous stereogenic centers via azabicyclo iridium-oxazoline-phosphine-catalyzed hydrogenation of readily available vinyl fluorides. Various aromatic, aliphatic, and heterocyclic systems with a variety of functional groups were found to be compatible with the reaction and provide the highly desirable product as single diastereomers with excellent enantioselectivities.
PROCESS FOR DOUBLE CARBONYLATION OF ALLYL ALCOHOLS TO CORRESPONDING DIESTERS
-
Paragraph 0064; 0067; 0068, (2017/07/14)
The invention relates to a process for doubly carbonylating allyl alcohols to the corresponding diesters, wherein a linear or branched allyl alcohol is reacted with a linear or branched alkanol (alcohol) with supply of CO and in the presence of a catalytic system composed of a palladium complex and at least one organic phosphorus ligand and in the presence of a hydrogen halide selected from HCl, HBr and HI.