Microwave-assisted cross-coupling of 3-chloro-2-pyrazolines and 3-chloro-1-phenyl-1,4,5,6-tetrahydropyridazine with aryl boronic acids
摘要:
3-Chloro-l-phenyl-2-pyrazoliiie and 3-chloo-1-phenyl-1,4,5,6-tetrahydropyridazine were coupled with aryl boronic acids in good yields under microwave heating conditions (140 degrees C, 5 min). (c) 2005 Elsevier Ltd. All rights reserved.
Studies on the Fischer indole synthesis: Behaviour of cyclic hydrazones of tetrahydropyridazine and pyrazoline series in polyphosphoric acid.
作者:Franco Sannicolò
DOI:10.1016/0040-4039(84)80018-0
日期:——
Heating 1,3-diphenyl-1,4,5,6-tetrahydropyridazine in PPA affords mainly 4-benzoyl-1,2,3,4-tetrahydroquinoline and 2-anilinopropiophenone. In analogous conditions 1,5-diphenyl-3-methyl-2-pyrazoline gives 2-styrylindole, benzidine and benzylideneacetone.
One-pot synthesis of 2,6-diaryl-4,5-dihydropyridazin-3(2H)-ones: Copper catalyzed annulation of aldehydes, arylhydrazines and 3-acryloyloxazolidin-2-one
作者:Jianbo Zhao、Shengshu Lei、Min Wu、Can Pang、Hao Li
DOI:10.1016/j.tetlet.2023.154473
日期:2023.5
The three-component synthesis of pyridazinones from aldehydes, arylhydrazines and 3-acryloyloxazolidin-2-one catalyzed by Cu(OTf)2 has been developed. This strategy exhibits high tolerance towards many functional groups including various aliphatic, aromatic and hetero-aromatic aldehydes to give 2,6-diaryl-4,5-dihydropyridazin-3(2H)-one products in moderate to high yields.
开发了Cu(OTf) 2催化醛类、芳基肼类和3-丙烯酰恶唑烷-2-酮类三组分合成哒嗪酮类化合物。该策略对包括各种脂肪族、芳香族和杂芳族醛在内的许多官能团表现出高耐受性,以中高产率生成 2,6-diaryl-4,5-dihydropyridazin-3(2 H )-one 产物。
Robinson, Brian; Khan, Munir I.; Shaw, Mark J., Journal of the Chemical Society. Perkin transactions I, 1987, p. 2265 - 2268
作者:Robinson, Brian、Khan, Munir I.、Shaw, Mark J.
DOI:——
日期:——
The rearrangement of cyclopropylketone arylhydrazones. Synthesis of tryptamines and tetrahydropyridazines
作者:Rinat F. Salikov、Aleksandr Yu. Belyy、Yury V. Tomilov
DOI:10.1016/j.tetlet.2014.09.017
日期:2014.10
The cyclopropyliminium rearrangement of cyclopropylketone arylhydrazones may result in two possible products. The first one forms via cyclopropane ring-opening and ring-closure to give six-membered tetrahydropyridazines. The second is formed via ring-closure resulting in a five-membered ring and subsequent Grandberg rearrangement into a tryptamine. The product ratio depends on the nature of the starting hydrazones. (C) 2014 Elsevier Ltd. All rights reserved.