Untersuchungen über β‐substituierte Alkylarsinsäuren und ihre Derivate

Abstract

18210.5392 g Sbst. ergaben j3.8 ccm Gas (P = 754 mm, t o = 120; Dampfspannung der KOH-I,osung = 9.8 mm. Barometer-Korrektur 1.5 mm.C,H,Cl,As. Ber. C,H, 13.38. Gef. C,H, 11.69. Da Athylen in Wasser leicht liislich ist, kann man dieses Ergebnis als befriedigend betrachten.P -C h 1 or at h y 1a r s i n s a u r e (V) . 2 g P-Chlorathyl-dichlor-arsin wurden niit einigen ccm Wasser iibergossen und vorsichtig durch iiberschiissiges 30-proz. P e r h y d r 01 oxydiert. WeiBe Nadeln oder Blattchen (aus Alkohol) ; Schmp. 133~. Leicht loslich in Wasser und Alkohol.

The arsonomethyl analogue of 3-phosphoglycerate

“…The method of Gough & King (1928), Nekrassow & Nekrassow (1928) and Scherlin & Epstein (1928) was adapted as follows. NaOH (120g, 3mol) and As203 (100g, 0.5 mol) were dissolved in water (300ml), and the solution was cooled to 200C.…”

Sternutators.

“…Diphenylaminechloroarsine is prepared: (a) when diphenylamine or methyldiphenylamine, arsenious chloride, and o-dichlorobenzene are boiled under a reflux for five hours (22,144,148); (b) when diphenylhydrazine is heated with arsenic trichloride (78); (c) when 2-bromo-6'-methylaminodiphenylarsinic acid, dry potassium carbonate, amyl alcohol, and a trace of powdered copper are boiled under a reflux for twelve hours (22,148); (d) by condensation of phenyldichloroarsine with diphenylamine in o-dichlorobenzene solution (the presence of the solvent is not essential) (23,58); (e) by condensation of ¡6-chlorovinyldichloroarsine and diphenylamine with or without a solvent (23,120); (f) by reducing diphenylamine-o-arsinic acid or phenarsazinic acid in hot alcohol-hydrochloric acid solution with sulfur dioxide, after adding a trace of iodine (46); (g) upon heating a perchloride of 10-methylor 10-phenyl-5,10-dihydrophenarsazine (123); (h) by treating fused diphenylamine with concentrated hydrochloric acid (density 1.08), heating and stirring until almost free from water, and then mixing with arsenious oxide and fusing for four hours (29); (i) by boiling aniline and arsenic trichloride for seventy-two hours, adding sodium hydroxide, and steam distilling; the crude oxy compound is then treated with hydrochloric acid and acetone ( 22); (j) upon boiling a mixture of 10,10'oxy-5,10-dihydrophenarsazine, benzoyl chloride, and dry benzene under a reflux for six hours ( 22); (k) by condensation of (1) phenyl-p-tolylamine,…”

The Chlorovinylarsines.

“…(2) 10-Chloro-5,10-dihydrophenarsazine, AsCl NH is prepared by boiling a mixture of diphenylamine, /3-chlorovinyldichloroarsine, and o-dichlorobenzene under a reflux for twelve hours (3,25). It boils at 120-121°C.…”