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The Electrocyclic Reactions
Author(s) -
Desimoni Giovanni,
Faita Giuseppe,
Guidetti Sergio,
Righetti Pier Paolo
Publication year - 1999
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/(sici)1099-0690(199908)1999:8<1921::aid-ejoc1921>3.0.co;2-n
Subject(s) - chemistry , ring (chemistry) , salt (chemistry) , solvent , electrocyclic reaction , reaction rate constant , closure (psychology) , solvent effects , photochemistry , computational chemistry , organic chemistry , kinetics , physics , quantum mechanics , economics , market economy
Abstract The rate constants of the electrocyclic ring closure of (1 Z ,3 Z ,5 E )‐1,2,6‐triphenylhexa‐1,3,5‐triene ( 1 ) and of the ring opening of dimethyl 3,4‐dimethyl‐1,2‐diphenylcyclobutene‐ cis ‐3,4‐dicarboxylate ( 3 ) were determined in 15 and 16 solvents, respectively. The ring closure of 1 shows, in spite of theoretical predictions, neither solvent nor salt effects. For the ring opening of 3 , small solvent and salt effects were found, suggesting the possibility of observing small acceleration due to specific solute–solvent or salt interactions.