Nesmeyanov, A. N. published the artcileThermal telomerization of silanes with olefins, Product Details of C7H16Cl2Si, the publication is Tetrahedron (1957), 248-52, database is CAplus.
Thermal telomerization of MeSiHCl2 (I) with C2H4 at 260-75°/560 atm. was effected in a 500 cc. stainless steel autoclave. I (123 g.) in an N atm. was mixed with C2H4, the autoclave heated to 260°/500 atm., and the mixture maintained 2 hrs. at 260-70° with the pressure falling to 50 atm. The collected products (499 g.) from 3 runs (381 g. I) were fractionated to give 51 g. I and the tabulated pure MeSiCl2(C2H4)nH products (n, % yield, n20D, d20, MR, b.p., given): 1, 23.6, -, -, -, 100°; 2, 25.6, 1.4312, 1.0427, 43.48, 147-8°; 3, 17.7, 1.4390, 0.9931, 52.75, 91°/32 mm.; 4, 13.4, 1.4440, 0.9761, 61.83, 94°/6 mm.; 5, 4.7, 1.4490, 0.9600, 71.32, 111-14°/3 mm.; 6, 3.8, 1.4532, 0.9552, 80.20, 124-7/3 mm.; above 6, 8.5, -, -, -, -. The reaction with SiCl3H (II) was carried out 2 hrs. at 270-85° at maximum pressure 200 atm. in 4 runs (261 g. II) and yielded 353 g. product, distilled over a 15 plate column to give 10 g. II and pure alkyltrichlorosilanes, SiCl3(C2H4)nH (n, % yield, n20D, d20, MR, and b.p. recorded): 1, 20.1, -, -, -, 98°; 2, 25.3, 1.4352, 1.1577, 43.19, 146-7°; 3, 15.4, 1.4440, 1.1094, 52.51, 87-9°/30; 4, 13.1, 1.4490, 1.0744, 61.76, 96.5°/10; 5, 4.0, 1.4547, 1.0501, 71.17, 76°/2; above 5, 12.2,-,-,- -. The structures of the methylalkyldichloro- and alkyltrichlorosilanes were substantiated by the MR determinations and by formation by the Grignard reaction of the corresponding trimethyl derivatives (compound, b.p., n20D, d20, and MR given): BuSiMe3, 114°, 1.4030, 0.7203, 44.12; C6H13SiMe3, 163°, 1.4160, 0.7412, 53.58; C8H17SiMe3, 75°/10 mm., 1.4242, 0.7646, 62.58. The reaction of I with C3H6 was carried out in 2 runs at 260-75° 3 hrs. at 100 atm. maximum pressure to give 216 g. product from 151 g. I. Distillation gave 21 g. I and MeSiCl2(C3H6)nH (n, n20D, and b.p./mm. given): 1, 1.4240, 123-4°; 2, 1.4400, 82°/32; 3, 1.4540, 80-2°/2. The telomerization reactions resulted from the cleavage of the Si-H bond, as evidenced by its absence in the compounds obtained as shown by the neg. test with KOH in H2O. It is evident that the thermal reaction is of a chain character.
Tetrahedron published new progress about 14799-94-1. 14799-94-1 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Dichloro(hexyl)(methyl)silane, and the molecular formula is C7H16Cl2Si, Product Details of C7H16Cl2Si.
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