Yamamoto, Gaku published the artcileRestricted rotation involving the tetrahedral carbon. XLV. Appearance of a maximum in the rotational barriers of 9-(1,1-dimethyl-2-phenylethyl)triptycenes at a medium-sized peri-substituent, Formula: C7H5Cl2NO2, the main research area is kinetics rotational isomerization phenethyltriptycene; equilibrium rotational isomerization phenethyltriptycene; atropisomerism substituent effect phenethyltriptycene; rotational barrier substituent effect phenethyltriptycene; potential barrier substituent effect phenethyltriptycene; proton NMR phenethyltriptycene.
The rotational isomers of seven I (R = H, F, OMe, Cl, Br, CF3, Me; R1 = H, Cl; R2 = H, OMe, Cl, Me) were stereoselectively prepared and their rotational isomerization kinetics were determined; compounds with relatively small R and R2 (F and OMe) had larger barriers than I (R = R2 = H, R2 = Cl) and I (R, R2 = Cl, Br, Me, CF3) had lower barriers even though R and R2 were relatively large. This anomaly is due to large mol. deformations. The equilibrium constants for the atropisomerism and the 1H NMR are discussed.
Bulletin of the Chemical Society of Japan published new progress about Conformational transition enthalpy. 3032-32-4 belongs to class chlorides-buliding-blocks, name is 2-Amino-3,6-dichlorobenzoic acid, and the molecular formula is C7H5Cl2NO2, Formula: C7H5Cl2NO2.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics