cas 104662-85-3, METHYL(6-METHYL-2H-1,4-BENZOXAZIN-3(4H)-ONE-2-YL)ACETATE | Articles data ｜lookchem

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104662-85-3

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A Convenient and One-Pot Synthesis of Methyl &α-(3,4-Dihydro-3-oxo-2H-1,4-benzoxazin-2-yl)acetates
A convenient and one-step method for the preparation of methyl α-(6-substituted 3,4-dihydro-3-oxo-2H-1,4-benzoxazin-2-yl)acetates (1a, and 8-14) is described.The reaction of appropriately substituted 2-aminophenols with maleic anhydride in the presence of Et3N gives the corresponding benzoxazinylacetates (1a and 8-10) while with methylmaleic anhydride, an initial nucleophilic attack at the more hindered carbonyl group takes place leading to the formation of the corresponding 2-methylbenzoxazinylacetates (11-14) in excellent yields.The antiinflammatory activity of these acetates (1a and 8-14) is also described.
Shridhar, S. R.,Ram, Bhagat,Rao, K. Srinivasa,Jain, M. L.
p. 992 - 994
(2007/10/02)

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Chemical Properties

Melting Point: 163-167 °C(lit.)
PSA: 64.63000
LogP: 1.39560

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