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Formation of 2,5-dihydro-2-iminopyrroles, 2,5-dihydro-2-iminofurans and (Z)-3-alkylamino-2,3-dicyanoacrylatesvia4-chloro-5H-1,2,3-dithiazol-5-ylidene derivatives

✍ Scribed by Hyi-Seung Lee; Kyongtae Kim

Publisher: Elsevier Science
Year: 1998
Tongue: French
Weight: 225 KB
Volume: 39
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(98)01445-2

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✦ Synopsis

-vlidene derivatives 1-3 with primary and secovdary alkylarmnes in CH,CL at room temperature gave 2,5-dzhydro-2-iminopyrroles (22-55%) and 2, 5-dihydro-2-imino[urans (18-62%). However, similar treatment of alltyl (4-chloro-5H-1,2,3dithtazol-5-ylidene)cyanoacetates under the same conditions gave (Z)-3-alkylamino-2,3-dzc3'anoacrylate esters (39-72%).

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