A facile synthesis of 2(H)-oxo-3-substituted-1-benzopyrans
A simple and efficient synthesis of 2(H)-oxo-1-benzopyrans 3 in asingle step from salicylaldehyde and malonate derivatives catalysed by anhydrous zinc chloride has been described.
Srinivas, K.,Krishna, K. L.,Sivaprasad, A.,Rao, P. Shanthan
p. 936 - 938
(2007/10/03)
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