S. N. Murthy, B. Madhav, V. P. Reddy
Jul 14, 2010
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Journal
Tetrahedron Letters
Abstract
Various 2-amino-4H-chromen-4-yl phosphonate derivatives were synthesized in good yields by condensation of salicylaldehyde, malononitrile or ethylcyanoacetate, and triethyl phosphite using β-cyclodextrin as a reusable catalyst under neutral conditions, in water.