Synthesis of 2,3-Dihydro-3H-pyrano[2,3-f ]-1,3-benzoxazines. -The cyclocondensation of 7-hydroxycoumarins (I) with chlorocarbonylisocyanate (II) represents a facile way to the hitherto unknown angular pyranobenzoxazines (III). -(VOVK, M.
β¦ LIBER β¦
Synthesis of 2,3-dihydro-3h-pyrano[2,3-f]-1,3-benzoxazines
β Scribed by M. V. Vovk; A. V. Bol'but
- Book ID
- 105514609
- Publisher
- Springer US
- Year
- 1997
- Tongue
- English
- Weight
- 54 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0009-3122
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## Abstract A series of novel 2,3βdiarylβ3,4βdihydroβ__2H__β1,3βbenzoxazines have been prepared in high yields from __o__βarylaminomethylphenols and aromatic aldehydes in the presence of SnCl~4~ for the first time, and their fungicidal activities were investigated too. Some of the products showed g