title: Substrate dependence in aqueous Diels-Alder reactions of cyclohexadiene derivatives with 1,4-benzoquinone.
abstract: A reactivity difference based on the position of substituents on cyclohexa-1,3- diene was observed for the title reaction. The effect of water as solvent was more distinct for 1-methyl-4-isopropylcyclohexa-1,3-diene than for 2-methyl-5-isopropylcyclohexa- 1,3-diene or non-substituted cyclohexa-1,3-diene. The effect of NaCl (salting-out) and guanidium chloride (salting-in) was also large for 1-methyl-4-isopropylcyclohexa-1,3- diene.
authors.affiliation: Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Sunakawa
authors.forename: Chiaki
authors.initials: C
authors.lastname: Kuroda
mesh_terms: D016227:Benzoquinones / Q000737:chemistry*; D002384:Catalysis; D002712:Chlorides / Q000737:chemistry; D053138:Cyclohexenes / Q000737:chemistry*; D008954:Models, Biological; D008956:Models, Chemical; D013379:Substrate Specificity; D014867:Water / Q000737:chemistry*
chemical_list: D016227:Benzoquinones; D002712:Chlorides; D053138:Cyclohexenes; D014867:Water; C004532:quinone