DABCO-promoted facile and convenient synthesis of novel isoxazolyl-1H-2,3-pyrrole dicarboxylates
Synthesis of isoxazolyl-1H-2,3-pyrrole dicarboxylate (4) was simply achieved by one-pot three component reaction of isoxazole amine (1) with diethyl acetylenedicarboxylate (DEAD) (2), and glyoxal (3), in acetonitrile catalyzed by diazabicyclo octane (DABC
Synthesis of 2([methyl-5-[(E)-2-aryl-1-ethenyl]-4-isoxazolyl]imino)-1,3- thiazolan-4-ones and their Mannich bases
Isoxazolyl chloroacetamides (2) were obtained from 4-amino-3-methyl-5- styrylisoxazoles (1) on reaction with chloroacetyl chloride. Cyclocondensation of 2 with NH4SCN yielded 2([-methyl-5-(E)-2-aryl-1-ethenyl]-4-isoxazolylimino)- 1,3-thiazolan-4-ones(3).
Rajanarendar,Ramesh,Rao, E. Kalyan,Reddy, A. Siva Rami
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p. 2555 - 2564
(2009/08/15)
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