SYNTHESIS AND SPECTRAL PROPERTIES OF DIETHYL ORGANYLCHALCOGENOALKYL(ALKYL)MALONATES, RX(CH2)nCR'(COOC2H5)2, AND 5-ALKYL-5-(ORGANYLCHALCOGENOALKYL)BARBITURATES, RX(CH2) (X=Se, Te)

Article abstract of DOI:10.1016/0022-328X(83)87161-7

Barbiturates substituted at the 5-position with organyltelluroalkyl or organylselonoalkyl groups were prepared by ring annulation of appropriately substituted diethyl malonates with urea or thiourea.The substituted diethyl malonates