61516-68-5Relevant academic research and scientific papers
Synthesis of 2-Oxo and 2-Thioxo-3(2H)-benzothiazoleethanimic Acid Anhydride with Acetic Acid and Related Products
D'Amico, John J.,Bollinger, Frederic G.,Freeman, John J.
, p. 1503 - 1509 (2007/10/02)
The reaction of the appropriate 2-benzothiazolinone with 2-chloroacetamide under basic conditions afforded the 2-oxo-3(2H)-benzothiazolineacetamides 6-9.The 2-thioxo-3(2H)-benzothiazolineacetamide (10) was prepared by the reaction of 3-(carbethoxymethyl)benzothiazoline-2-thione with ammonium hydroxide.The reaction of acetamides 6-10 with the appropriate anhydride containing a catalytic amount of the sodium salt of the acid corresponding to the anhydride afforded the titled compounds 11-18 in excellent yields.The omission of the catalyst in the same reaction furnished a mixture containing 57percent of the titled compound, 37percent of the nitrile and 6percent of an unknown.Possible mechanism and supporting nmr, ir and mass spectral data are discussed.
Derivatives of 2-Oxo-3(2)-Benzothiazolineacetonitrile and Related Compounds. I. Synthesis of N-Hydroxy-2-oxo or Thioxo-3(2H)-Benzothiazolineethanimidamide and Related Products
D'Amico, John J.,Marvel, John T.,Bollinger, Frederic G.
, p. 1375 - 1378 (2007/10/02)
The following methods afforded the titled acetonitriles 1-5 in excelent yields:(1) the reaction of the appropriate 2-benzothiazolinones with chloroacetonitrile under basic conditions and (2) the dehydration of the appropriate 2-oxo-3(2H)-benzothiazolineacetamides with phosphorus oxychloride or pentoxide.The reaction of the acetonitriles 1-5 and 2-thioxo-3(2H)-benzothiazolineacetonitrile with hydroxylamine afforded the titled compounds 6-11.Supporting nmr and mass spectral data are discussed.
Synthesis of 2-Thioxo-3-benzothiazolineacetonitrile and Related Products
D'Amico, John J.,Suba, Lydia,Ruminski, Peter G.
, p. 1479 - 1482 (2007/10/02)
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.
Use of benzothiazoline compounds as plant growth regulants
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, (2008/06/13)
Certain benzothiazoline compounds are found to have plant growth regulation activity on leguminous plants.
Use of 3-substituted benzothiazolines as plant growth regulants
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, (2008/06/13)
Effective plant growth regulaton is obtained by application to the plant of certain benzothiazoline compounds having the formula SPC1
