developed and used as recyclablecatalysts for the aza-Michael addition at room temperature without any organic solvent. [DABCO–PDO][OAc] was found to be the most efficientcatalyst, and the amount of catalyst was only 10 mol %. Various amines reacted with a wide range of α,β-unsaturated amides, smoothly affording target products in good to excellent yields within hours. Moreover, the catalyst could be reused
[ADPQ][CH3COO]: efficient and recyclable catalyst for aza-Michael addition of α, β-unsaturated compounds and amines under solvent-free conditions
作者:Xiaochong Gao、Ruichang Gao
DOI:10.1007/s11164-015-1950-4
日期:2015.11
The recyclable ionic liquid [ADPQ][CH3COO] has been used as catalyst for aza-Michael addition of amines to α, β-unsaturatedcompounds to produce β-amino compounds. The reactions were complete in a few hours with high yields. The ionic liquid can be recycled and reused six times without noticeable decrease of catalytic activity.
[EN] CXCR7 RECEPTOR MODULATORS<br/>[FR] MODULATEURS DU RÉCEPTEUR DE CXCR7
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2014191929A1
公开(公告)日:2014-12-04
The present invention relates to derivatives of formula (I) Formula (I) wherein (R1)n, R 2a, R 2b, R 3a, R 3b, R 4, L1, L2, X, Y and Ar1 are as described in the description, to their preparation, to pharmaceutically acceptable salts thereof, and to their use as pharmaceuticals, to pharmaceutical compositions containing one or more compounds of formula (I), and especially to their use as CXCR7 receptor modulators.
An efficient biomaterial supported bifunctional organocatalyst (ES-SO3− C5H5NH+) for the synthesis of β-amino carbonyls
作者:Sanny Verma、Suman L. Jain、Bir Sain
DOI:10.1039/c0ob00965b
日期:——
A biomaterial supported organocatalyst, readily synthesized by the reaction of chemically modified sulfonic group containing expanded corn starch with pyridine exhibited excellent catalytic activity for the synthesis of β-amino carbonyls in excellent yields via aza-Michael addition of amines to electron deficient alkenes. A remarkable enhancement in the reaction rates was observed with the prepared bifunctional organocatalyst in comparison to the either starch grafted sulfonic acid or the corresponding homogeneous pyridinium p-toluenesulfonate.
Graphene oxide: an efficient and reusable carbocatalyst for aza-Michael addition of amines to activated alkenes
作者:Sanny Verma、Harshal P. Mungse、Neeraj Kumar、Shivani Choudhary、Suman L. Jain、Bir Sain、Om P. Khatri
DOI:10.1039/c1cc15230k
日期:——
Graphene oxide was found to be a highly efficient, reusable and cost-effective organocatalyst for the aza-Michael addition of amines to activated alkenes to furnish corresponding β-amino compounds in excellent yields.