I. Yavari et al., REACTION OF MELDRUM ACID WITH ALKYL ISOCYANIDES - SYNTHESIS OF A NOVEL CLASS OF FURAN-DERIVATIVES, Journal of chemical research. Synopses, (3), 1996, pp. 146-147
The reaction between Meldrum's acid and alkyl isocyanides affords an e
lectron-deficient conjugated heterodiene, which undergoes a [1+4] cycl
oaddition reaction with another molecule of isocyanide to yield a nove
l class of fused furan ring system.