3440-30-0Relevant articles and documents
Tomchin,Kolb
, (1971)
Synthesis of a crosslinked polymer with a benzyl(triphenyl)phosphonium ionic liquid moiety and its catalytic activity
Liang, Xuezheng
, p. 99448 - 99453 (2015/12/04)
A novel crosslinked polymer with a benzyl(triphenyl)phosphonium ionic liquid moiety was synthesized from triphenylphosphine and p-xylylene dichloride. The bulky IL molecules were inlaid in the polymeric framework, which avoided pore blocking and IL moiety release. The polymer had a high BET surface area and accessible active sites. The polymer was applied to catalyze the aza-Michael additions and gave average yields over 95.0% in several minutes. The polymer had several advantages such as high BET surface area, high activity and high stability, which hold great potential for green chemical processes.
Sterically controlled stereoregulation in aldol reactions of 3-aryl-1-alkyl dihydrothiouracils
Kumar, Varun,Khatik, Gopal L.,Nair, Vipin A.
scheme or table, p. 2997 - 3001 (2012/01/13)
Aldol reactions of 3-aryl-1-alkyl dihydrothiouracils were investigated with respect to the orientation of the exocyclic group at N1, electronic effects of the aryl substituent at N3 and the steric demands of the electrophile. The reactions highlight the preference for formation of the anti aldol diastereomer with increasing steric constraints of the reactants. Georg Thieme Verlag Stuttgart · New York.