[3 + 2]-Annulation of Azaoxyallyl Cations and Thiocarbonyls for the Assembly of Thiazolidin-4-ones
作者:Vandana Jaiswal、Biplab Mondal、Kuldeep Singh、Dinabandhu Das、Jaideep Saha
DOI:10.1021/acs.orglett.9b01933
日期:2019.8.2
A base-promoted, efficient [3 + 2] annulation between azaoxyallyl cations and thiocarbonyls is reported for flexible access to highly functionalized thiazolidin-4-one derivatives in good to excellent yields. An intriguing feature of this method is the metal or Lewis acid free late-stage entry of distinct set of functional groups at C2 of thiazolidin-4-ones via substitution of a latent amino functional
[EN] TRIAZOLOPYRIDINE INHIBITORS OF MYELOPEROXIDASE<br/>[FR] INHIBITEURS DE TRIAZOLOPYRIDINE DE LA MYÉLOPEROXYDASE
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2017040450A1
公开(公告)日:2017-03-09
The present invention provides compounds of Formula (I): wherein A, Y and R1 are each as defined in the specification, and compositions comprising any of such novel compounds. These compounds are myeloperoxidase (MPO) inhibitors and/or eosinophil peroxidase (EPX) inhibitors, which may be used as medicaments.
A facile and efficient protocol for the synthesis of amides has been developed in the absence of transition metals. The reaction was performed with a catalytic amount of n-Bu4NI and aqueous TBHP as an oxidant. Various alcohols with N,N-disubstituted formamides were examined to furnish the desired products in good yields.
在没有过渡金属的情况下,已经开发了一种简便而有效的酰胺合成方案。用催化量的n- Bu 4 NI和TBHP水溶液作为氧化剂进行反应。研究了具有N,N-二取代甲酰胺的各种醇,以高收率提供所需产物。
Direct Synthesis of Amides from Oxidative Coupling of Benzyl Alcohols and N-substituted Formamides Using a Co–Al Based Heterogeneous Catalyst
作者:Dnyaneshwar D. Subhedar、Shyam Sunder R. Gupta、Bhalchandra M. Bhanage
DOI:10.1007/s10562-018-2519-9
日期:2018.10
Present work reports the direct synthesis of amides fromoxidative coupling of benzyl alcohols with various N-substituted formamides using a cobalt-hydrotalcite (Co-HT) derived catalyst. The Co-HT derived catalysts (Co-HT-2, Co-HT-3 and Co-HT-4 having Co2+/Al3+ molar ratio in the catalyst preparationmixture as 1/1, 2/1 and 3/1 respectively) were prepare following a co-precipitation method and characterized