Multisite Solid Catalyst for Cascade Reactions: The Direct Synthesis of Benzodiazepines from Nitro Compounds
作者:Maria J. Climent、Avelino Corma、Sara Iborra、Laura L. Santos
DOI:10.1002/chem.200900492
日期:2009.9.7
Substituted 1,5‐benzodiazepines are selectively synthesized in one pot from substituted nitroaromatics and ketones. The reaction is performed in the presence of hydrogen and in the absence of solvent by using a bifunctional solidcatalyst with a chemoselective hydrogenation functional group capable of reducing the nitro group to a diamino group and an acid functional group, which catalyzes the cyclocondensation
Efficient TCT-catalyzed Synthesis of 1,5-Benzodiazepine Derivatives under Mild Conditions
作者:Chun-Wei Kuo、Chun-Chao Wang、Veerababurao Kavala、Ching-Fa Yao
DOI:10.3390/molecules13092313
日期:——
2,4,6-Trichloro-1,3,5-triazine (TCT) efficiently catalyzed the condensation reactions between 1,2-diamines and various enolizable ketones to afford 1,5-benzodiazepines in good to excellent yields. Simple and mild reaction conditions, the use of a cheap catalyst and easy workup and isolation are notable features of this method.
Efficient and Green Method for the Synthesis of 1,5‐Benzodiazepine and Quinoxaline Derivatives in Water
作者:Parasa Hazarika、Pranjal Gogoi、Dilip Konwar
DOI:10.1080/00397910701489388
日期:2007.9.1
Abstract Various 1,5‐benzodiazepine and quinoxaline derivatives have been synthesized in water with excellent yields using a catalytic amount of indium chloride at room temperature. This synthetic protocol is nontoxic, safe, and environmentally benign.
An efficient method for the synthesis of 1,5-benzodiazepine derivatives under microwave irradiation without solvent
作者:Minothora Pozarentzi、Julia Stephanidou-Stephanatou、Constantinos A Tsoleridis
DOI:10.1016/s0040-4039(02)00115-6
日期:2002.2
synthesized in solvent-free conditions from o-phenylenediamines and ketones in the presence of a catalytic amount of acetic acid, undermicrowaveirradiation. This method is a very easy, rapid and high yielding reaction for the synthesis of 1,5-benzodiazepine derivatives.
在无溶剂条件下,在微波辐射下,在催化量的乙酸存在下,由邻苯二胺和酮合成了2,3-二氢-1 H -1,5-苯并二氮杂s。该方法是合成1,5-苯并二氮杂pine衍生物的非常容易,快速和高产率的反应。
Kumar, Sanjay; Sandhu, Jagir S., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2008, vol. 47, # 9, p. 1463 - 1466