作者:R. G. Kostyanovsky、Yu. I. El'natanov、O. N. Krutius、I. I. Chervin
DOI:10.1007/bf00696323
日期:1994.11
Methylene-bis-tartronates and methylene-bis-hydroxymethylmalonates form monolactones where the CO(2)R and OH (or CH2OH) groups are known to be cis-oriented. However, attempts to prepare the corresponding dilactones failed due to the unsufficient proximity of these functional groups. The results have been confirmed by NMR spectra.