1.1.1 -trichloro-3,4,6-trimethyl

The monomer tri-isocyanto-trimethyl-borazine (TITMB) was synthesized from trichloro-trimethyl-borazine (TCTMB) according to the method reported in the literature [12]. The Intermediate TCTMB was synthesized via a modification of the procedure of Brown and Laubengayer [13]. Methyl-amine hydrochloride and excess of BCI3 were refluxed in chlorobenzene for 6h and then maintained for 16h at 80°C. The reaction mixture was filtered warm, vacuum dried and subsequently sublimed under reduced pressure. A slight increase in yield (12%) of pure TCTMB was achieved. 

Oligomeric hindered amine light stabilizers are effective thermal antioxidants for polypropylene. Thus 0.1% of A[,Af-bis(2,2,6,6-tetramethyl-4-piperadinyl)-l,6-hexanediamine polymer, with 2,4,6-trichloro-l,3,5-triazine and 2,4,4-trimethyl-2-pentaneainine [70624-18-9] (35) (Fig. 5), protects polypropylene multifilaments against oxidation when exposed at 120°C in a forced-air oven (22) for 47 days. 3,5-Di-/ l -butyl-4-hydroxytoluene [128-37-0] (0.1%) affords protection for only 14 days. 

Imidazole, 2,4,5-trichloro-1-methyl-chlorination, 5, 398 Imidazole, 2,4,5-trideutero-iodination, 5, 401 Imidazole, 1-trifiuoroacetyl-reactions, 5, 451-452 Imidazole, 2-trifiuoromethyl-hydrolysis, 5, 432 Imidazole, 2,4,5-triiodo-nitration, 5, 396 synthesis, 5, 400 Imidazole, 1,2,4-trimethyl-photolysis, 5, 377 rearrangement, 5, 378 Imidazole, 1,2,5-trimethyl-photochemical rearrangement, 5, 377 rearrangement, 5, 378 Imidazole, 1,4,5-trimethyl-bromination, 5, 399 3-oxide... 

Pteridine, 2,4,7-triamino-6-phenyl-pharmacological activity, 3, 325 Pteridine, 2,4,6-trichloro-properties, 3, 267 Pteridine, 2,4,7-trichloro-properties, 3, 267 reaction, 3, 291 Pteridine, 4,6,7-trichloro-reaction, 3, 291 Pteridine, 4-trifluoromethyl-structure, 3, 266 Pteridine, 2,6,7-trimethyl-structure, 3, 266 Pteridine, 4,6,7-trimethyl-NMR, 3, 266... 

Harada et al. studied the TiO2 photocatalytic mineralization of trimethyl phosphate, trimethyl phosphite, and O, (9-dimethyl ammonium phosphodithioate and reported excellent mass balance based on phosphate, sulfate, and carbon dioxide produced after prolonged illumination [39]. Subsequent studies found the organophosphorus insecticides dimethyl-2,2-dichlorovinyl phosphate [Eq. (5)] and di-methyl-2,2,2-trichloro-I-hydroxyethyl phosphonate were mineralized by solar irradiation in the presence of suspended TiO2 [40] ... 

Chlorine atoms are easily substituted by fluorine in methyl- and polymethyl(trichloro-methyl)benzenes with evolution of heat to give l-methyl-2-(trifluoromcthyl)benzene,8 4-chloro-2-methyl-l-(trifluoromethyl)benzene,9 4-chloro-l-methyl-2-(trifluoromethyl)benzenc.10 1,3,5-trimethyl-2-(trifluoromethyl)benzene,11 I. S -tctramethyl-S trifluoromethyObenzene,11 and 2-methyl-4-phenyl-l-(trifluoromethyl)benzene8 in 50-60% yield. 

Phosphine, seleno-metal complexes, 664 bidentate, 664 Phosphine, tributyl-, 992 Phosphine, trichloro-, 990 Phosphine, tricyclohexyl-, 992 Phosphine, triethyl-, 992 Phosphine, trifluoro-jt acidity, 1034 Phosphine, triisopropyl-, 992 Phosphine, trimethyl-, 990, 992 oxides... 

If chloral (239) is treated with dimethyl-TMS-amine (187), l-(trimethylsiloxy)-l-dimethylamino-2,2,2-trichloro-ethane (244) is obtained via -elimination this yields dimethylformamide (245)l64 TMS-azide (14) forms with n-butanal (240) 1-azido-1-trimethyl-siloxy-butane (24d)165 [see section El]. 

Adapted from S. D. Fazio et al., Anal. Chem. 1985, 57, 1559 with permission. Copyright 1985, American Chemical Society. b Type M = monochloro D = dichloro T = trichloro. c Trimethyl. ... 

Tetracarbonyl trichloro-, trifluoro-, and Trimethyl-silyl)cobalt Complexes]... 

The method has been further improved." Trimethyl(perfluoroalkyl)silanes RpTMS (Rp = c, -C, perfluoroaliphatic groups) are prepared by reaction of perfluoroalkyl halides RpX (X = Br, I) with chlorotrimethylsilane in the presence of tris(dialkylamino)phosphanes in acetonitrile. For example, chlorotrimethylsilane was treated with bromotrifluoromethane and tris(diethylamino)phosphane in acetonitrile at — 40"C for 1 hour to give trimethyl(trifluo-romethyl)silane in 90% yield. Bis(dimethylamino)(trifluoromethyl)silane is available from the reaction of chlorobis(dimethylamino)silane with the system bromotrifluoromethane/tris-(diethylamino)phosphane, while trichloro(trifluoromethyl)silane is prepared by nucleophilic trifluoromethylation of tetrachlorosilane with bromotrifluorornethane/tris(diethylamino)phos-phane. " ... 

The reaction of trimethyl(perfluorophenyl)stannane with germanium(l V) chloride also proceeds smoothly, but the yield of trichloro(perfluorophenyl)germane (II. X = Cl) is rather low. Germanium(lV) bromide completely reacts with trimethyl(perfluorophcnyl)stannane over 22 hours. Apart from bromotrimethyltin. the reaction produces dibromodimethyltin. which makes it diflficult to isolate the target product. The reaction of germanium(IV) chloride with trimethyl(perlluorophenyl)silane does not proceed at a high temperature (240 C, 46 h), or in acetonitrile in the presence of cesium fluoride (50 C. 7 h). 

BENZENE, 1,3,5-TRICHLORO- seeTIK300 BENZENE, 1,3,5-TRIMETHYL- see TLM050 BENZENE-s-TRIOL see PGROOO... 

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