Substituted Prop-2-in-1-ol and Prop-2-en-1-ol derivatives

Substituted prop-2-yn-1-ol and prop-2-en-1-ol derivatives (I) are new. Substituted prop-2-yn-1-ol and prop-2-en-1-ol derivatives of formula (R4-C(R2)(R3)-C(R1)(O-R5)-[X1-Y1]-Q) (I) and their salts are new. [X1-Y1] : -CC-, -(H)C=C(H)-, -C(H)=C(H)- or -CH 2-CH 2-; Q : carbocyclic- or heterocyclic-group; R1 : heteroaryl (where the heteroaryl is an aromatic 5-7 membered heterocycle containing 1-4 heteroatoms comprising O, N or S), heterocyclyl (where the heterocyclyl is an optionally partially unsaturated 5-7 membered heterocycle containing 1-4 heteroatoms comprising O, N or S), NR1aR1b (all optionally substituted by one or more substituents comprising halo, hydroxy, 1-4C-alkoxy or 1-4C-alkylthio), 1-20C-(halo)alkyl, 1-20C-(halo)alkenyl, 1-20C-(halo)alkynyl, 3-20C-cycloalkyl, 1-20C-(halo)alkoxy, 1-20C-(halo)alkylthio, 3-20C-cycloalkanyl, 3-20C-cycloalkanyloxy, 3-20C-cycloalkanylthio, 3-20C-cycloalkenyl, 3-20C-cycloalkenyloxy, 3-20C-cycloalkenylthio, 1-20C-alkylene, oxy-2-4C-alkylene, oxy-1-3C-alkylene or phenyl; R2-R4 : R1 or H; and R5 : e.g. 1-20C-alkylene, oxy-2-4C-alkylene, oxy-1-3C-alkylene (all optionally substituted). Full Definitions are given in the DEFINITIONS (Full Definitions) Field. ACTIVITY : Plant Protectant. MECHANISM OF ACTION : None given. Die Erfindung betrifift substituierte Prop-2-in-1-ol- und Prop-2-en-1-ol-Derivate der allgemeinen Formel (I), wobei die Reste R 1 , R 2 , R 3 , R 4 , R 5 , [X-Y] und Q die in der Beschreibung angegebenen Definitionen besitzen, Verfahren zu deren Herstellung und ihre Verwendung zur Steigerung der Stresstoleranz in Pflanzen gegenüber abiotischem Stress, sowie zur Stärkung des Pflanzenwachstums und/oder zur Erhöhung des Pflanzenertrags.