Synthesis of 4-alkoxy-4-methyl- and 4-alkoxy-4-fluoromethyl-1,3-benzoxazinones |
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| Authors: | Hamad Z Alkhathlan |
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| Institution: | Department of Chemistry, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia |
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| Abstract: | Cyclization of 2-hydroxyacetophenone hydrazones with triphosgene resulted in the formation of 4-methylene-1,3-benzoxazinones. These compounds were converted to 4-alkoxy-4-methyl-1,3-benzoxazinones and 4-fluoromethyl-4-methoxy-1,3-benzoxazinones upon treatment with alcohols under refluxing conditions and F-TEDA-BF4 in acetonitrile and methanol, respectively. |
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| Keywords: | 2-hydroxyacetophenone hydrazones triphosgene 1 3-benzoxazinones |
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