Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Methylamine, N-benzylidene

Methoxy-7-methoxycarbonyl-1,2,3,4-tetrahydronaphthalene 2-Naphthalene-carboxylic acid, 5,6,7,8-tetrahydro-3-methoxy-, methyl ester (78112-34-2), 65, 98 Methyl acrylate (96-33-3), 66, 54, 59 dimerization by Pd(II), 66, 52 Methylamine, N-benzylidene-, 65, 140 METHYL 4-0-BENZOYL-6-BROMO-6-DEOXY-a-0-GLUCOPYRANOSIDE ... [Pg.251]

Ester-stabilized azomethine ylides 76 (R = MeO, EWG = COOR ) show a high reactivity to imines such as 2-phenyl-1-azirine and N-benzylidene-methylamine, cycloadduct 220 being obtained in the former case (82LA2146). [Pg.304]

Only a few examples of the [3 + 2] cycloaddition of thiocarbonyl ylides with C=N compounds have been reported so far. By comparison with aldehydes, imines are poor dipolarophiles. For example, Al-benzylidene methylamine and adamanta-nethione (5)-methylide (52) produce 1,3-thiazolidine (129) in only 13% yield (163). An alternative and efficient approach to 1,3-thiazohdines involves the [3 + 2] cycloaddition of azomethine ylides with thiocarbonyl compounds [cf. (169)]. [Pg.343]

Benzyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazolium chloride (4568-71-2), 65, 26 N-Benzylidenebenzenesulfonamide (13909-34-7), 66, 203, 204, 206, 210 Benzylidenemalononitrile Malononitrile, benzylidene- Propanedinitrile, (phenylmethylene)- (2700-22-3), 65, 32 Benzyl mercaptan a-Toluenethiol Benzenemethanethiol (100-53-8), 65, 215 N-BENZYL-N-METHOXYMETHYL-N-(TRIMETHYLSlLYL)METHYLAMINE BENZENEMETHANAMINE, N-(METHOXYMETHYL)-N-[(TRlMETHYL-SILYL)METHYL]- (93102-05-7), 67, 133 1-BENZYLOXY-4-PENTEN-2-OL 4-PENTEN-2-OL. 1 -(PHENYLMETHOXY)- (58931-16-11), 69, 80... [Pg.261]

The irans-benzylidene derivative (188), obtained as the major product of condensation of 3-methylpiperazine 2,5-dione and benzaldehyde in the presence of acetic anhydride, undergoes photoisomerization to the cis isomer (191) on irradiation in methanol. Both isomers have been converted into tetrahydropyrazine imino ethers (189) and (192) by treatment with triethyloxonium fluoroborate. The trans compound reacts more slowly and gives a lower yield of imino ether and this is attributed to steric hindrance. Compounds 188 and 191 are de-acetylated on treatment with methanolic 2 N potassium hydroxide. The trans and cis isomers (187) and (190), so produced are converted into 3-benzyl-2,5-dihydroxy-6-methylpyrazine (144) when heated at 100° with sodium hydroxide.384 Treatment of the dichloroacetyl derivative of phenylalanine with methylamine gives l-methyl-3-benzylidenepiperazine 2,5-dione with the stereochemistry shown.384a... [Pg.188]

Equimolar amounts of N,N-dimethylcarbamylisothiocyanate and benzylidene-methylamine in ether allowed to stand 1 hr. at room temp, in a closed flask 2-dimethylamino-5-methyl -6-phenyl -5,6-dihydro-4H-l, 3,5- thiadiazin-4-one. Y 82%. F. e., prepn. of carbamyltbiocyanates, RgNCO-S-C = N, and related reactions, s. J. Goerdeler and D. Wobig, A. 757, 120 (1970). [Pg.451]


See other pages where Methylamine, N-benzylidene is mentioned: [Pg.251]    [Pg.136]    [Pg.221]    [Pg.151]    [Pg.144]    [Pg.228]    [Pg.145]    [Pg.34]    [Pg.18]    [Pg.251]    [Pg.136]    [Pg.221]    [Pg.151]    [Pg.144]    [Pg.228]    [Pg.145]    [Pg.34]    [Pg.18]    [Pg.137]    [Pg.327]    [Pg.52]    [Pg.130]   
See also in sourсe #XX -- [ Pg.65 , Pg.140 ]

See also in sourсe #XX -- [ Pg.14 , Pg.65 , Pg.269 ]




SEARCH



Benzyliden methylamine

Methylamine

N benzylidene

N- methylamine

N-Methylamines

© 2024 chempedia.info