Formation and Reactivity of 2-Styryl-1,4-benzoquinones
摘要:
The 2-styryl-1,4-benzoquinones 7a,b, generated by the oxidation of the corresponding hydroquinones 6a,b, dimerize at room temperature in a Diels-Alder reaction. The strictly chemo, regio- and stereoselective process can be rationalized by means of frontier orbital interactions, The polycyclic adducts 8a,b undergo a further intramolecular cycloaddition (8a,b --> 10a,b) after oxidation on silica gel.
Formation and Reactivity of 2-Styryl-1,4-benzoquinones
摘要:
The 2-styryl-1,4-benzoquinones 7a,b, generated by the oxidation of the corresponding hydroquinones 6a,b, dimerize at room temperature in a Diels-Alder reaction. The strictly chemo, regio- and stereoselective process can be rationalized by means of frontier orbital interactions, The polycyclic adducts 8a,b undergo a further intramolecular cycloaddition (8a,b --> 10a,b) after oxidation on silica gel.
The 2-styryl-1,4-benzoquinones 7a,b, generated by the oxidation of the corresponding hydroquinones 6a,b, dimerize at room temperature in a Diels-Alder reaction. The strictly chemo, regio- and stereoselective process can be rationalized by means of frontier orbital interactions, The polycyclic adducts 8a,b undergo a further intramolecular cycloaddition (8a,b --> 10a,b) after oxidation on silica gel.