One-pot β-alkylation of secondary alcohols with primary alcohols catalyzed by ruthenacycles
作者:Xu Chang、Low Wei Chuan、Li Yongxin、Sumod A. Pullarkat
DOI:10.1016/j.tetlet.2012.01.025
日期:2012.3
best combination of reactivity and product selectivity among the four. An expanded scope of substrates was also studied with the inclusion of unsaturated primary alcohols. The reactivity trend observed gave insights into the role of hydrogen bonding in the catalytic mechanism involving transfer hydrogenation between the substrates and the transitionmetal catalyst.
[EN] INHIBITORS OF NOROVIRUS AND CORONAVIRUS REPLICATION<br/>[FR] INHIBITEURS DE LA RÉPLICATION DE NOROVIRUS ET DE CORONAVIRUS
申请人:COCRYSTAL PHARMA INC
公开号:WO2021206876A1
公开(公告)日:2021-10-14
Compounds of Formula (I) and methods of inhibiting the replication of viruses in a biological sample or patient, of reducing the amount of viruses in a biological sample or patient, and of treating a virus infection in a patient, comprising administering to said biological sample or patient an effective amount of a compound represented by Formula (I), a compound of Table A or B or a pharmaceutically acceptable salt thereof.
A RuPHOX-Ru catalyzed selective asymmetrichydrogenation of exocyclic α,β-unsaturated ketones has been developed, furnishing the corresponding chiral exocyclic allylic alcohols in high yields and with up to >99.5% ee. The reaction could be performed on a gram scale with a relatively low catalyst loading (up to 10000 S/C) without any loss in reaction activity and enantioselectivity. The resulting hydrogenated
已开发出RuPHOX-Ru催化的环外α,β-不饱和酮的选择性不对称氢化,可提供高收率和最高> 99.5%ee的相应手性环外烯丙基醇。该反应可以以克级进行,具有相对较低的催化剂负载量(最高10000 S / C),而没有任何反应活性和对映选择性的损失。所得的氢化产物可以容易地转化为具有高不对称性能的几种生物活性化合物。不对称方案为合成手性环外烯丙基醇提供了一种有效的方法。
The development of a new catalytic process: Bu3SnH-catalyzed reductive cyclization of enals and enones
作者:David S Hays、Gregory C Fu
DOI:10.1016/s0040-4020(99)00446-9
日期:1999.7
By sequencing two known reactions, a new catalytic carbon-carbon bond-forming process, the Bu3SnH-catalyzed, PhSiH3-mediated reductive cyclization of enals and enones, has been developed. The addition of EtOH to the reactions leads to reproducibly good yields of the cyclized products; a rationale for including this additive is provided.
The present invention pertains to novel cyclopentanols and their unexpected advantageous use thereof in enhancing, improving or modifying the fragrance of perfumes, colognes, toilet waters, fabric care products, personal products, and the like.