Practical synthesis of bis-homoallylic alcohols from dialdehydes or their acetals
作者:Vyacheslav V. Samoshin、Dmitriy E. Gremyachinskiy、Lori L. Smith、Igor V. Bliznets、Paul H. Gross
DOI:10.1016/s0040-4039(02)01398-9
日期:2002.9
Bis-homoallylic alcohols were prepared in good yields by allylation of dialdehydes or their acetals with allyl bromide, tin(II) chloride and potassium iodide in water or water/THF.
Periodic ethylene-vinyl alcohol copolymers via ADMET polymerization: Synthesis, characterization, and thermal property
作者:Zi-Long Li、An Lv、Lei Li、Xin-Xing Deng、Li-Jing Zhang、Fu-Sheng Du、Zi-Chen Li
DOI:10.1016/j.polymer.2013.05.037
日期:2013.7
content viaADMET. These polymer samples were characterized by gel permeation chromatography (GPC), NMR, and matrix-assisted laser desorption/ionization time-of-fight mass spectroscopy (MALDI-TOF-MS). Thermalproperties of EVAc and EVA copolymers were investigated by thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). EVAc copolymers exhibited two-stage decompositions on
Heptan-1,3,5,7-tetrol-diacetonides, flexible backbone segments with a marked conformational preference
作者:Reinhard W. Hoffmann、B.Colin Kahrs
DOI:10.1016/0040-4039(96)00863-5
日期:1996.6
Two (1,3-dioxan-4-yl)-methanes 3 and 10 have been synthesized by standard methods. Compound 3 has a marked (9:1) tendency to populate conformer 3b as evidenced by the 3JH,H-coupling constants in the inter-ring segment. The two additional methyl substituents in 10 increase this conformationalpreference to > 95:5.