A simple and efficient method has been developed for the synthesis of N-allylthioureas from allylic bromides in one-pot by using a supported reagents system, KSCN/SiO2–RNH3OAc/Al2O3, in which allyl bromide reacts first with KSCN/SiO2 and the product, allyl isothiocyanate, reacts with RNH3OAc/Al2O3 to give the final product, N-allylthiourea, in good yield.
通过使用支持的试剂系统KSCN / SiO 2 -RNH 3 OAc / Al 2 O 3,由一锅法从烯丙基溴中合成N-烯丙基硫脲的简单有效方法已被开发,其中烯丙基溴首先与KSCN / SiO 2和产物异硫氰酸烯丙酯与RNH 3 OAc / Al 2 O 3反应,以高收率得到最终产物N-烯丙基硫脲。
A ligand-free and base-free copper catalyzed reaction: arylation of ammonia and primary amines as their acetate salts
作者:Maravanahalli S. Siddegowda、Hemmige S. Yathirajan、Ramesha A. Ramakrishna
DOI:10.1016/j.tetlet.2012.07.048
日期:2012.9
A ligand-free, base-free copper catalyzed arylation of ammonia and primary amines as their corresponding acetate salts are established. The Carboxylate group is believed to be catalyzing the arylation of ammonia. This reaction is specific for primary amines.
Chemical mechanism of inactivation of bee venom phospholipase A2 by the marine natural products manoalide, luffariellolide, and scalaradial
作者:Barbara C. M. Potts、D. John Faulkner、Marianne S. De Carvalho、Robert S. Jacobs
DOI:10.1021/ja00039a021
日期:1992.6
Manoalide methyl analogue (MMA, 12), which is a simple analogue of the reactive portion of 1, reacted similarly. The γ-(n-butyl-amino)butenolide 6b reacted with hydroxylamine to form the oxime 8 with concomitant release of n-butylamine. When the luffariellolide-PLA 2 and manoalide-PLA 2 adducts were treated with hydroxylamine, the PLA 2 activity was substantially recovered, but the activity was not recovered
A simple and efficient method has been developed for the synthesis of 2-aminothiazoles and N-allylthioureas from commercially available materials in one pot by using a supported reagents system, KSCN/SiO2-RNH3OAc/Al2O3, in which alpha-halo ketone reacts first KSCN/SiO2 and the product, alpha.-thiocyanatoketone, reacts with RNH3OAc/Al2O3 to give the final product, 2-aminothiazoles, in good yield and allyl bromide reacts with KSCN/SiO2 and the product, allyl isothiocyanate, reacts with RNH3OAc/Al2O3 to give N-allylthiourea. (c) 2006 Elsevier Ltd. All rights reserved.
Discovery of 5-Nitro-6-thiocyanatopyrimidines as Inhibitors of <i>Cryptococcus neoformans</i> and <i>Cryptococcus gattii</i>
作者:Maureen J. Donlin、Thomas R. Lane、Olga Riabova、Alexander Lepioshkin、Evan Xu、Jeffrey Lin、Vadim Makarov、Sean Ekins