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Extra resources for Kinderzuschlag oder Arbeitslosengeld II?: Bedürftigkeit prüfen Kinderarmut entgegenwirken. Kommentar mit Prüfschema und Berechnungsbeispielen
S. patent 2 238 669 to R. H. Wiley. ^Soshestvenskaya, J. Gen. Chem. USSR 8, 294 (1938); ibid. 10, 1689 (1940); Manulkin and Yakubova, J. Gen. Chem. USSR 10, 1300 (1940). 31 Kipping and Blackburn, /. Chem. Soc. 1932, 2200. 82 Polis, Ber. 18, 1540 (1885). 33 Kipping and Lloyd, /. Chem. Soc. 79, 449 (1901). 34 Smith and Kipping, J. Chem. Soc. 101, 2553 (1912). ; THE ORGANOSILICON MONOMEK8 32 (as in the preparation of tripropylallylsilane from silicon tetrapropyl), but most have been made by the successive replacement of the chlorine in silicon tetrachloride with different radicals supplied by Grignard reagents, as in these examples: + C 6H 5 MgBr = C 6H 5SiCl3 + MgBrCl C 6H 5SiCl3 + C 2 H 5 MgBr = (C 6 H 5 (C 2 H 6 )SiCl 2 + MgBrCl (C 6H 5 )(C 2H 5 )SiCl 2 + C 3 H 7 MgBr = (C 6H 5 )(C 2 H 6 )(C 3 H 7 )SiCl + MgBrCl (C 6H 5 )(C 2 H 5 )(C 3 H 7 )SiCl + CH 3 MgBr = (C 6H 5 )(C 2 H 5 )(C 3 H 7 )(CH 3 )Si + MgBrCl SiCU ) A mixed alkyls, together with their physical propmethods of preparation, and literature references, is given in 35 Those with four different groups represent Krause and von Grpsse.
No mechanism is offered for the If the salts of aluminum, copper, mercury, or nickel which reaction. are disclosed as catalysts undergo any intermediate reactions with the hydrocarbon, such reactions must be cyclic because the catalyst The fact that molar quantities of catalyst are reis not consumed. quired for the reaction No may be evidence for such intermediate reactions. subsequent publications on the method have appeared, and so it to evaluate its importance in comparison with the earlier is difficult syntheses.
52, 706 (1919). Emgleus, Maddock, and Reid, J. Chem. Soc. 1941, 353. "Meioks, J. Gen. Chem. USSR 7, 2007 (1937); ibid 8, 291 (1938); Gierut, Sowa and Nieuwland, J. Am. Chem. Soc. 58, &97 (1936). 45 and Sauer, Taylor and Walden, /. Am. Chem. Soc. 66, 842 (1944); Gilliam /. Am. Chem. Soc. 66, 1793 (1944). 46 Martin and Kipping, J. Chem. Soc. 95, 302 (1909). p. 120). p. * The trialkylchlorosilanes undergo all of the reactions which are typical of the halides of silicon, although the violence of these reactions is groups.