85382-77-0Relevant academic research and scientific papers
Structural analysis of chiral dopants in nematic systems by example of ether-ester-substituted 1,4:3,6-dianhydrohexitols
Gella, Ivan M.,Drushlyak, Tatyana G.,Babak, Nikolay L.,Novikova, Nataly B.,Lipson, Victoria V.
, p. 34 - 44 (2014/05/06)
Series of ether-ester-substituted 1,4:3,6-dianhydrohexitols were synthesized and studied as chiral dopants to nematics as compositions with 4′-pentyl-4-cyanobiphenyl. The most helical twisting power was found for bis-esters. Lesser values were found for mixed ether-esters with certain configuration. Other ethers and ether-esters revealed noticeably smaller values. Supramolecular peculiarities of such systems and their role in helical twisting are discussed. 2014 Copyright
Regioselective Acylation of 1,4:3,6-Dianhydro-D-glucitol
Stoss, Peter,Merrath, Peter,Schlueter, Guenther
, p. 174 - 176 (2007/10/02)
Acylation of 1,4:3,6-dianhydro-D-glucitol with anhydrides in the presence of heavy metal salts affords 5-endo-acylates with high regioselectivity, without detectable amounts of the isomeric 2-acylates.Acyl group migration occurs with preference for the 2-exo-position, on heating an acylation mixture, which contains varying amounts of 1,4:3,6-dianhydro-D-glucitol, 2- and 5-monoacylate and 2,5-diacylate, in the presence of reesterification catalysts and whilst distilling off the lower boiling 2-acylate.
