Journal of Organic Chemistry p. 1964 - 1969 (1984)
Update date:2022-07-29
Topics:
Schweizer, Edward E.
Lee, Kee-Jung
Reactions of phosphoranes 1 with isocyanates 2 have given excellent yields of 4,9-dihydropyrazolo<5,1-b>quinazolines 10 and 2,3-dihydro-1H-imidazo<1,2-b>pyrazol-2-ones 13 presumably via the intermediate 1-oxo-3,4,8-triaza-2,4,6,7-octatetraenes 3.The ratio
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Doi:10.1055/s-1984-30729
(1984)Doi:10.1039/c9dt00381a
(2019)Doi:10.1016/S0040-4039(01)91148-7
(1984)Doi:10.1021/jm0601598
(2006)Doi:10.1016/j.tetasy.2006.04.004
(2006)Doi:10.1016/S0022-328X(00)99156-3
(1984)
