Premium
Synthese mittlerer und großer Ringe, XXX Regioselektive Thermolyse von Oligomethylen‐oxaquadricyclan‐dicarbonsäureestern zu 3,6‐Alkanooxepindicarbonsäureestern – Röntgenstrukturanalysen und semiempirische Rechnungen
Author(s) -
Tochtermann Werner,
Vogt Carola,
Peters EvaMaria,
Peters Karl,
Schnering Hans Georg Von,
Würthwein ErnstUlrich
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911241129
Subject(s) - chemistry , regioselectivity , cyclopropane , stereochemistry , thermal decomposition , bond cleavage , medicinal chemistry , ring (chemistry) , organic chemistry , catalysis
Synthesis of Medium and Large Rings, XXX 1) . – Regioselective Thermolysis of Oligomethylene Oxaquadricyclanedicar‐boxylic Esters to 3,6‐Alkanooxepinedicarboxylic Esters – X‐ray Structural Analyses and Semiempirical Calculations X‐ray structural analyses and semiempirical calculations for the oxaquadricyclanes 1 – 3 are discussed. The regioselectivity observed for the thermolyses of 1 – 3 (exclusive formation of 3,6‐alkanooxepines 6 ) is in line with the assumption that preferential cleavage of the long C – C bonds between the donor and acceptor substituents of the cyclopropane rings determines the reaction course.