将3-二烷基氨基取代的丙酸的六种甲酯进行电化学氟化,得到相应的全氟代氟化物。研究了以下二烷基氨基取代基:二乙基氨基,二正丙基氨基,二正丁基氨基,吡咯烷基,吗啉代和哌啶子基。这些以合理收率获得的全氟酸氟化物被认为是制备软质(可降解)含氟化合物的潜在关键前体。这些盐在水溶液中显示出明显降低的表面张力。报告了所获得的所有全氟酸氟化物的物理性质,以及它们的光谱数据(19 F NMR,质谱和IR光谱)。
Polyvinyl Pyridine as a Novel Solid Heterogeneous, Recyclable Catalyst for aza-Michael Reaction
作者:Shriniwas Samant、Vivek Raje、Ramakrishna Bhat
DOI:10.1055/s-2006-949381
日期:2006.9
Polyvinyl pyridine (PVP) is prepared by radical polymerization of 4-vinyl pyridine. PVP was used as a heterogeneous basic catalyst for the aza-Michael reaction of secondary amines and carbamates with α,β-unsaturated esters, cyanides and ketones to obtain the corresponding adducts in excellent yields (70-90%).
Promiscuous Candida antarctica lipase B-catalyzed synthesis of β-amino esters via aza-Michael addition of amines to acrylates
作者:Kishor P. Dhake、Pawan J. Tambade、Rekha S. Singhal、Bhalchandra M. Bhanage
DOI:10.1016/j.tetlet.2010.06.089
日期:2010.8
has been developed. The reaction is applicable to a wide variety of primary and secondary amines with different acrylates to synthesize the corresponding β-aminoesters with good yields. An alternative route for the synthesis of higher β-aminoesters through the additional transesterification step is also studied and was found effective.
Borax as an Efficient Metal-Free Catalyst for Hetero-Michael Reactions in an Aqueous Medium
作者:Sahid Hussain、Saitanya K. Bharadwaj、Mihir K. Chaudhuri、Harjyoti Kalita
DOI:10.1002/ejoc.200600691
日期:2007.1
Borax, a naturally occurring material, very efficiently catalyzed the conjugate addition of thiols, dithiols and amines to α,β-unsaturated ketones, nitriles, amides, aldehydes and esters in an aqueousmedium to afford the corresponding Michael adducts in good yields at room temperature. Recycling of the catalyst and scaling up of the reactions are important attributes of this catalysis. The reactions
Efficient Copper-Catalyzed Chemo Selective Conjugate Addition of Aliphatic Amines to α,β-Unsaturated Compounds in Water
作者:Chun-Gu Xia、Li-Wen Xu、Jing-Wei Li、Shao-Lin Zhou、Xiao-Xue Hu
DOI:10.1055/s-2003-42125
日期:——
The first environmentally benign, highly efficient, conjugate addition of aliphaticamines to α,β-unsaturated compounds catalyzed by simple copper salts in the green solvent, water is described.