N-substituted benzothiazoline and N-substituted benzoxazoline derivatives
This disclosure relates to N-substituted benzothiazolines and N-substituted benzoxazolines which are useful as plant growth regulants. This disclosure further relates to plant growth regulant compositions containing such N-substituted benzothiazolines and N-substituted benzoxazolines and to methods of regulating the growth of leguminous plants employing such compounds and compositions.
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(2008/06/13)
Synthesis of 2-Thioxo-3-benzothiazolineacetonitrile and Related Products
Attempts to thermally rearrange 2-benzothiazolylthioacetonitrile (1) to the titled compound 8 failed.The reaction of 3-chloromethyl-2-benzothiazolinethione with potassium cyanide in dimethylformamide (DMF) or dimethylsulfoxide (DMSO) at 25-30 deg C afforded 8 in 98percent yield.Whereas replacing the DMF or DMSO solvent with acetone furnished the unexpected sulfide 9 in 92percent yield.Substituting 3-chloromethyl-2-benzoxazolinethione as the electrophile in the same reaction gave the sulfide 10 in 95percent yield.Possible mechanisms and supporting nmr data are discussed.
D'Amico, John J.,Suba, Lydia,Ruminski, Peter G.
p. 1479 - 1482
(2007/10/02)
N-Substituted oxobenzothiazolines and their use as plant growth regulators
This invention relates to novel N-substituted oxobenzothiazolines and to their use in a method of regulating leguminous plant growth as well as to plant growth regulant compositions.
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(2008/06/13)
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