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Reactions of Diamines with Isocyanates and Isothiocyanates

✍ Scribed by STOUTLAND, OLIVER; HELGEN, LON; AGRE, COURTLAND L.

Book ID
120573954
Publisher
American Chemical Society
Year
1959
Tongue
English
Weight
331 KB
Volume
24
Category
Article
ISSN
0022-3263

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Cycloaddition reactions of dialkylaminob
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✍ A. Ansorge; D.J. Brauer; H. BΓΌrger; F. DΓΆrrenbach; T. Hagen; G. Pawelke; W. Weut πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 38 KB

The reactions of (CF3)2BNMe2 (Al) and (CF3)2BNEt2 (A2) with isocyanates and isothiocyanates have been studied. Near room temperature the C=N bonds of R-N=C=O and R-N=C=S undergo i2+2] cycloaddition with the B-N bond of Al to yield the four-membered rings 8. I, V, VI, VIII and IX rearrange at -6O'C t