Extension-Growth Activities of Some Cyclo Propane Derivatives, a New Class Of Antauxin.

Abstract

2,3-Dihydrobenzofur-2,3-yleneacetic acid, 1,2-dihydro-l,2-naphthyleneacetic acid, and cis- and trans-2,3-dihydrothionaphthen-2,3-yleneacetic acid have been shown to competitively inhibit auxin-induced growth of Avena coleoptile sections, and thus are antiauxins. trans-2-Phenylcyclopropanecarboxylic acid, 2,3dihydrothionaphthen-2,3-yleneacetic acid dioxide, and 1,2-3,4-tetrahydronaphth1,2-3,4-di(yleneacetic acid) were inactive towards coleoptile growth.