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Trimethylsilyl carbamate

Bis(4-formylphenyl) succinate 2201 and octamethylene N,N -bis(trimethylsilyl) carbamate 2202 condense with aUyltrimethylsilane 82 in the presence of 10 mol% trityl perchlorate or TMSOTf 20 to give, after 24 h at 0°C in CH2CI2, the poly-... [Pg.328]

TpZnH]. Other silyl reagents, bis(trimethylsilyl)malonate and bis(trimethylsilyl) carbamate, result in the formation of [ TpZn0C(0) 2CH2] and [TpZn(NCO)] respectively. This chemistry is summarised in Eqn. (20). [Pg.75]

For the introduction of the TMS group under neutral conditions, trimethylsilyl chloride can be activated with lithium sulfide.Also trimethylsilylketene acetals (39), silyl enol ethers (40) (in particular those of pentane-2,4-dione), A -trimethylsilylacetamide (41), A, 0-bis(trimethylsilyl)acetamide (42), A A -bis(trimethylsilyl)urea (43) and A, 0-bis(trimethylsilyl)carbamate (44) are effective silylating agents under neutral conditions (Scheme 39). ... [Pg.654]

Trimethylsiloxy-2-pentene, 227 Trimethylsilylacetic acid, 509 Trimethylsilylacetyl chloride, 509 Trimethylsilylarenes, 514 Trimethylsilyl carbamates, 263 Trimethylsilylcarbene, 307-308 Trimethylsilyl cyanide, 133... [Pg.305]

Amines from alkyl carbamates. lodotrimethylsilane reacts with alkyl carbamates to form trimethylsilyl carbamates, which on methanolysis afford amines (equation I). ... [Pg.441]

Silylation. This is an efficient silyl donor in fact, it is superior to N,0-bis(trimethylsilyl)acetamide (1, 61 2, 30 3, 23-24) or to N,0-bis(trimethylsilyl) carbamate, (CH3)3SiNHC02Si(CH3)a. Yields of silylated alcohols, phenols, and carboxylic acids are 92-987o- The by-product, sulfamic acid, is insoluble in the medium and removable by filtration. [Pg.18]

Figure 6 Illustration of carbamate deprotection of 1 with trimethylsilyliodide. The first step is a transesterification reaction to convert the benzylcarbamate in (a) to the trimethylsilyl-carbamate shown in (b). Treatment with a suitable OH such as water yields the free carbamic acid in (c), which spontaneously loses carbon dioxide to provide (d) an imprinted site comprising a pair of free amines in 2. Figure 6 Illustration of carbamate deprotection of 1 with trimethylsilyliodide. The first step is a transesterification reaction to convert the benzylcarbamate in (a) to the trimethylsilyl-carbamate shown in (b). Treatment with a suitable OH such as water yields the free carbamic acid in (c), which spontaneously loses carbon dioxide to provide (d) an imprinted site comprising a pair of free amines in 2.
B2539. See Bis (trimethylsilyl) carbamate B2570. See Bis (trimethylsilyl) trif I uoroacetam ide B2595. See Bis (trimethylsilyl) urea B2790. See t-ButyIdimethylchlorosilane B2792. See 2-(t-Butyldimethylsiloxy) pent-2-en-4-one... [Pg.375]

N,0-Bis (trimethylsilyl) acetamide 0,N-Bis (trimethylsilyl) acetamide. See Bis (trimethylsilyl) acetamide Bis (trimethylsilyl) amine. See Hexamethyidisilazane Bis (trimethylsilyl) carbamate CAS 35342-88-2 EINECS/ELINCS 252-520-4 Synonyms Trimethylsilyl N-(trimethylsilyl) carbamate Classification Silane Empirical C7HigN02Si2 Properties M.w. 205.41 m.p. 72-80 C Toxicology Irritating to eyes, skin, respiratory system... [Pg.536]

Thmethylsilyl thfluoromethyl sulfonate. See Trimethylsilyl trifluoromethane sulfonate Thmethylsilyl N-(trimethylsilyl) carbamate. See Bis (trimethylsilyl) carbamate a-(Trimethylsilyl)-uj-((trimethylsilyl) oxy). See Dimethylsiloxane... [Pg.4577]

See other pages where Trimethylsilyl carbamate is mentioned: [Pg.12]    [Pg.68]    [Pg.143]    [Pg.154]    [Pg.106]    [Pg.1291]    [Pg.506]    [Pg.507]    [Pg.102]    [Pg.5646]    [Pg.6514]    [Pg.6949]    [Pg.7053]    [Pg.737]    [Pg.1167]    [Pg.434]    [Pg.398]   
See also in sourсe #XX -- [ Pg.154 ]



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