37964-99-1Relevant academic research and scientific papers
An evidence of contact ion pair in β-(acyloxy)alkyl radical heterolysis during copper(I)-mediated synthesis of trisubstituted alkenes
Ram, Ram N.,Tittal, Ram K.
supporting information, p. 4448 - 4451 (2014/08/05)
The first evidence for a unified mechanism of heterolysis in β-(acyloxy)alkyl radical involving contact ion pair (CIP) is presented for both fragmentation and rearrangement of the acyloxy group in the reaction of 1-alkoxy-2,2,2-trichloroethyl acetate with
Chlorine NQR on Hemiacetals of Chloral, Cl3CCH(OH)OR
Hashimoto, M.,Weiss, Alarich
, p. 134 - 141 (2007/10/02)
The 35Cl NQR spectra of 22 hemiacetals of chloral, Cl3CCH(OH)OR, were studied.Most of these hemiacetals with R = unbranched aliphatic group, show a three line 35Cl NQR spectrum having a regular splitting pattern; two lines around νL = 38.6 +/- 0.1 MHz and the third line at νH = 39.0 +/- 0.1 MHz.It is assumed that the difference between νL and νH is due to "chemical splitting".Completely irregular splitting pattern are found for the hemiacetals carrying bulky branched aliphatic groups.Moreover the magnitudes of these splittings are relatively large.A deformation of the molecules due to intramolecular steric hindrance seems to be responsible for this large splitting.The frequency shift in these compounds due to the steric effect is estimated to be 1 MHz or less.A peculiar temperature dependence of the 35Cl NQR line intensity was found for chloral n-butylhemiacetal.An intramolecular bifurcated hydrogen bond between CCl3 and OH groups is proposed to be responsible for the phenomenon.For p-chlorobenzylalcohol at ca. 226 K a phase transition was observed.
