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    • 3. 发明申请
    • PREPARATION OF THIAZOLES
    • 制备THIAZOLES
    • US20090198054A1
    • 2009-08-06
    • US12424594
    • 2009-04-16
    • Thomas PitternaHenry SzczepanskiPeter MaienfischOttmar Franz HuterThomas RapoldMarcel SennThomas GobelAnthony Cornelius O'Sullivan
    • Thomas PitternaHenry SzczepanskiPeter MaienfischOttmar Franz HuterThomas RapoldMarcel SennThomas GobelAnthony Cornelius O'Sullivan
    • C07D413/02C07D277/20C07D277/70
    • C07D277/32C07D277/16C07D277/36C07D277/70C07D277/74
    • The present disclosure is directed to a process for the preparation of a compound having the formula: wherein R is unsubstituted or substituted C1-C12alkyl, unsubstituted or substituted C2-C4alkenyl, unsubstituted or substituted C2-C4alkynyl, unsubstituted or substituted C3-C6cycloalkyl, unsubstituted or substituted aryl, unsubstituted or substituted heteroaryl, or —SR1; R1 is unsubstituted or substituted C1-C12alkyl, unsubstituted or substituted C2-C4alkenyl, unsubstituted or substituted C2-C4alkynyl, unsubstituted or substituted cycloalkyl, unsubstituted or substituted aryl or unsubstituted or substituted heteroaryl; and X is a selected leaving group that is not halogen, and may specifically be methylsulfonate, trifluoromethylsulfonate, and p-toluenesulfonate. These compounds are valuable intermediates useful in the synthesis of compounds having pesticidal activity. Generally, the process includes reacting a water-removing reagent, with a compound having the formula Water-removing agents that may be used include thionyl chloride (SOCl2), thionyl bromide (SOBr2), phosphorus oxychloride (POCl3), phosphorus oxybromide (POBr3), phosphorus pentachloride or a sulfonic acid chloride or bromide.
    • 本公开涉及制备具有下式的化合物的方法:其中R是未取代的或取代的C 1 -C 12烷基,未取代或取代的C 2 -C 4烯基,未取代或取代的C 2 -C 4炔基,未取代或取代的C 3 -C 6环烷基,未取代的 或取代的芳基,未取代或取代的杂芳基或-SR1; C 1 -C 12烷基,未取代或取代的C 2 -C 4烯基,未取代或取代的C 2 -C 4炔基,未取代或取代的环烷基,未取代或取代的芳基或未取代或取代的杂芳基; X是不是卤素的选择的离去基团,可以具体为甲基磺酸酯,三氟甲基磺酸酯和对甲苯磺酸酯。 这些化合物是有用的合成具有杀虫活性的化合物的中间体。 通常,该方法包括使除水试剂与具有式的化合物反应可以使用的除水剂包括亚硫酰氯(SOCl 2),亚硫酰溴(SOBr 2),三氯氧化磷(POCl 3),三溴氧化磷(POBr 3) ,五氯化磷或磺酰氯或溴化物。