00773naa#a2200193#i#450# EN\\bibl\82569 20241227073524.5 2782-1900 20210923b2021####ek#y0engy0150####ca RU Quantum-chemical study of the regioselectivity of the diels-alder heteroreaction of α,β-unsaturated thiocarbonyl compounds with unsymmetrical dienophiles Journal article Yaroslavl Yaroslavl State Technical University 2021 4 с. Journal article local Соединения с одним тиопирановым кольцом. 547.818.1 Ovchinnikov Konstantin L'vovich Starostin Mihail Vital'evich Larionov Nikolay Nikolaevich chemintech.ru