Lewis Acid-Mediated Nucleophilic Substitution Reactions of 2-Alkoxy-3,4-dihydro-2H-1-benzopyrans: Regiochemistry and Utility in the Synthesis of 3,4-Dihydro-2H-1-benzopyran-2-carboxylic Acids.

Noal Cohen,Beatrice Schaer,Gabriel Saucy,René Borer,Louis J. Todaro,Anne Marie Chiu

Lewis Acid-Mediated Nucleophilic Substitution Reactions of 2-Alkoxy-3,4-dihydro-2H-1-benzopyrans: Regiochemistry and Utility in the Synthesis of 3,4-Dihydro-2H-1-benzopyran-2-carboxylic Acids.

1990

Noal Cohen
Beatrice Schaer
Gabriel Saucy
René Borer
Louis J. Todaro
Anne Marie Chiu

Les substitutions nucleophiles des chromannes du titre avec le [cyano trimethyl] silane sont etudiees. Le catalyseur, TiCl 4 ou SnCl 4 , a une influence sur la regioselectivite des reactions

Keywords:

Regioselectivity
Alkoxy group
Lewis acids and bases
Benzopyran
Benzopyrans
Organic chemistry
Chemistry
Nucleophilic substitution

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