Unexpected result of thiophosphorylation of 6-aminopyrano[2,3-c]pyrazole-5-carbonitrile derivative
The reaction of 6-amino-3-methyl-4-(2,4-dichlorophenyl)-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile with phosphorus sulfide in boiling pyridine unexpectedly leads to the formation of a not previously described heterocyclic system—[1,2]oxaphosphinino[6,5-c]pyrazole derivative. Structure of the ob...
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https://www.scopus.com/record/display.uri?eid=2-s2.0-85074083725&origin=resultslist&sort=plf-f&src=s&st1=Unexpected+Result+of+Thiophosphorylation+of+6-Aminopyrano%5b2%2c3-c%5dpyrazole-5-carbonitrile+Derivative&st2=&sid=4f408b59f4849f50794099559112287a&sot=b&sdt=b&sl=113&s=TITLE-ABS-KEY%28Unexpected+Result+of+Thiophosphorylation+of+6-Aminopyrano%5b2%2c3-c%5dpyrazole-5-carbonitrile+Derivative%29&relpos=0&citeCnt=0&searchTerm=https://dspace.ncfu.ru/handle/20.500.12258/8339