SUBSTITUTED VINYL AND ALKINYL CYCLOHEXENOLS AS ACTIVE AGENTS AGAINST ABIOTIC STRESS IN PLANTS
申请人:Frackenpohl Jens
公开号:US20140080704A1
公开(公告)日:2014-03-20
The invention relates to substituted vinyl- and alkynylcyclohexenols of the general formula (I) and salts thereof
where the R
1
, R
2
, R
3
, R
4
, R
5
, [X—Y] and Q radicals are each as defined in the description, to processes for preparation thereof and to the use thereof for enhancing stress tolerance in plants with respect to abiotic stress, and/or for increasing plant yield.
4-Tributylstannyl,2-(5H)-furanone and pyrrolone have been prepared in good yields by addition of mixed stannylcuprate reagent on γ-amino and γ-hydroxy acetylenic esters. The use of these compounds as useful intermediates for the selective functionalization of these heterocyclic rings is discussed.
β,γ-Dihalogenated unsaturatedacids were prepared regio- and stereoselectively from allenic acid, and some aspects of their reactivities were studied. α,β-unsaturated acids - halogenation - carboxylic acids - cross-coupling - organometallic reagents
Three-component reactions with 3,4-diiodoalk-2-enoic derivatives, primary amines, and terminal alkynes proceeded to give trisubstituted pyrroles in fair to good yields in the presence of palladium and copper catalysts under mild reaction conditions.