Phosphorous startg

Mercaptoquinoline ring. Startg. thioamide heated 20 min. at 110-120° with poly-phosphoric acid 4-mercapto-6-methoxy-2-phenylquinoline. Y 85-90%. F. e. s. J. Moszew and J. Zawrzykraj, Zesz. Nauk. Univ. Jagiellon., Pr. Chem. 7967, No. 12, 13 (Pol) C. A. 69, 18991. 

Startg. cyanophosphonic ester treated slowly with satd. KCN-soln. so that the temp, does not rise while the pH reaches 12 -> phosphoric ester (Y 94%) refluxed 12 hrs. in coned. HCl -> a-hydroxyundecanoic acid (Y 93%). - This is part of a synthesis of a-hydroxycarboxylic acids from carboxylic acid chlorides with addition of 1 C-atom. F. e. s. Y. Okamoto, T. Nitta, and H. Sakurai, Kogyo Kagaku Zasshi 71, 187 (1968) C. A. 69, 35342. 

Startg. acetal kept 2 days at room temp, with phosphoric acid product. Y F. e. s. D. W. Brown et al., Tetrah. Let. 1968, 2609. 

A mixture of tris(diethylamino)phosphine and startg. thiourea heated to 140° with stirring for 15-20° (evolution of diethylamine), cooled to room temp., and coned. HCl added dropwise to precipitate hydrochloride 2-allyliminothiazolidine. Y 88%. F.e. and phosphorous(III) amide reagents, also 2-iminotetrahydro-l,3-thiazine analogs s. L. Mizrakh et al., Zh. Obshch. Khim. 58, 2246-51 (1988). 

Startg. ketol containing a little phosphoric acid added under reduced pressure to a flask heated below 100° with simultaneous distillation of the product -> cis-l-acetyl-2-vinylcyclopropane. Y 60%. F. e. s. Y. Bahurel et al., Bl. 1971, 2209-2222. 

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