4-Benzylamino-5-ethyl

For the reaction mechanism it was suggested that the hydrochloride salts of 540 suffered Hofmann elimination to give pyrimidines 544. The 4-chloro-5-[(2-benzylamino)ethyl] pyrimidines 544 then underwent cycliza-tion to pyrrolo[2,3-[Pg.166]

C27H33N30ft 89371-36-8) see Imidapril 7V-benzyl-7V-[l-methyl-2-(4-methoxyphenyl)ethyl]amine see under 2-benzylamino-l-(4-methoxyphenyl)propane ( )-7V-benzyl-7V-(l-methyl-2-(4-methoxyphenyl)ethyl]-amine... 

Briliant Blue FCF (E 133, FD C Blue No. 1, Cl Food Blue 2) is a triarylmethane dye disodium 3-[N-ethyl-N-[4-[[4-[N-ethyl-N-(3-sulfonatobenzyl)-amino] phenyl] (2-sulfonatophenyl)methylene]-2,5-cyclohexadiene-l-ylidene]ammoniome-thyl] benzenesulfonate (or disodium (4-(N-ethyl-3-sulfonato-benzylamino) phenyl)-a-(4-N-ethyl-3-sulfonatobenzylamino)cyclohexa-2,5-dienylidene)-toluene-2-sul-... 

Ethyl 6-amino-4,5-difluoro-l-methyl-7-oxo-li/,7//-pyrido[3,2,l-i/]cinno-line-8-carboxylate (84, R = H) was prepared from the 6-benzylamino derivative 84 (R = CH2Ph) by catalytic debenzylation over Pd/C in a mixture of ethanol and acetic acid (92EUP470578,92MIP1). 

Ring transformation of ethyl 2,4-dioxo-l,2,3,4-tetrahydropyrido[2,3- pyrimidine-5-carboxylates 317 with 80% hydrazine hydrate in boiling ethanol gave a mixture of 5-methyl/allyl/benzylamino-l,2,3,4-tetrahydro-l,4-dioxopyr-ido[3,4-i/ pyridazines 318, pyrido[2,3,4-< <7]pyridazino[3,4-/ [l,2,4]triazepines 319, and a low yield of 2,3,4,6,7-penta-azaphenalene 320. The reaction of 317 with hydrazine hydrate was also performed without a solvent in an oil bath at 125 °C for 1 h to give the same products, but higher yields of 318 and lower yield of 319 as well as traces of 320 were obtained (Equation 25) <1997FA657>. 

Die erste dieser beiden Reaktionen kann in der Zucker-Chemie zur Synthese von Ethyl-6-0-acetyl-4-dialkylamino-2,3,4-trideoxy-hcx-2-enopyranosiden aus den ent-sprechenden 4-Aeetoxy-Derivaten angewendet werden3. Auch die 4-Benzylamino-Deriva-te lassen sich so herstellen, wenn auch nur in maBiger Ausbeute. 

Amino-4-(4-fluoro-benzylamino)-phenyl]-carbamic acid ethyl ester, C16H18FN302, MW 303.33, [150812-12-7]... 

Most stereoselective alkylations to the lactone intermediates are accomplished using the method reported by Kleinman and co-workers.1201 The dianion form is prepared by treating the lactone with lithium or sodium hexamethyldisilanazide. Then, the reaction between the dianion and an alkyl halide produces the 2-alkylated lactone (Scheme 11, Section 10.6.2). Kleinman and co-workers reported that the ratio of the trans- and ds-lactone is 47 3. When a doubly protected a-amino aldehyde [e.g., dibenzylamino aldehyde, (/ert-butoxycarbonyl)-benzylamino aldehyde] is used, the c/.v-lactone is not obtained. As an example, the alkylation of (55,1 5)-5-[l -[/V-(/< rt-butoxycarbonyl)benzylamino]-2 -phenylethyl]dihydrofuran-2(3/7)-one to produce (3/ ,55,l 5)-3-benzyl-5-[1 -[/V-(/ert-butoxycarbonyl)benzylamino]-2 -phenyl-ethyl]dihydrofuran-2(3//)-one is described in this section. 

Ethyl (2f ,3J ,4S)-2-(Benzylamino)-4-[(terr-butoxycarbonyl)amino]-3-hydroxy-5-phenylpentanoate... 

Hexenoate Ethyl 3-Benzylamino-heptafluoro-2H- ElOb, 647 (In + R-NH2) ElOb, I86f. (On — En NHR)... 

Carbonylation of propargyl carbonates bearing an amino group yields lactams. The a-vinylidene /1-lactams 82 are prepared by the carbonylation of 4-benzylamino-2-alkynyl methyl carbonates 81 [20], The best results are obtained by using the cyclic phosphite (4-ethyl-2,6,7-trioxa-l-phosphabicyclo[2,2,2]octane) (83). The lactam formation is carried out in THF or MeCN as solvents at 50 °C under 1-10 atm of CO. 

A mixture of ethyl l-cyclopropyl-5,6,7,8-tetrafluoro-l,4-dihydro-4-oxoquinoline-3-carboxylate (28.2 g), benzylamine (9.8 ml), anhydrous potassium carbonate (23.6 g), and acetonitrile (140 ml) was heated at 100°-110°C for 1 h to give ethyl 5-benzylamino-l-cyclopropyl-6,7,8-trifluoro-l,4-dihydro-4-oxoquinoline-3-carboxylate (21.4 g), which was recrystallized from ethanol, melting point 134°-135°C. 

Benzylamino-6,6-dimethyl-3,6-dihydro-2(l//)-pyridinethione (115) with bis-(2,4,6-trichlorophenyl) a-ethylmalonate gave l-benzyl-3-ethyl-4-hydroxy-7,7-dimethyl-5-thioxo-5,6,7,8-tetrahydro-l,6-naphthyridin-2(l//)-one (116)-(reactants, PhBr, reflux, 2.5 h 30%) 679 analogs somewhat similarly.672,679,691... 

Sulfonation. The direct sulfonation of alkylaminotriphenylmethane dyes gives mixtures of substituted products. Although dyes containing anilino or benzylamino groups give more selective substitution, a sulfonated intermediate such as 3[(N-ethyl-N-phenylamino)methyl]benzenesulfonic acid (ethylbenzylanilinesulfonic acid) is the preferred starting material. However, Patent Blue V [354649-0], Cl Acid Blue 3, was made from 3-hydroxybenzaldehyde and two moles of diethyl aniline, followed by sulfonation of the leuco base and oxidation to the dye. FD C Green 2 [5141 -20-8/,... 

Das cyclische Diamid I wird durch Ethanol unter milden Bedingungen zum Phosphor-saure-[(2-benzylamino-2-oxo-ethyl)-methyl-amid]-ethylester-phenylester (100%) gespal-ten641 ... 

Anilino-propyl)-methyl- E2, 143 (2-Arylaminocarbonyl-alkyl)-organo- E2, 140 (a-Bcnzylamino-benzyI)-ethyI- E2, 131 ( -Benzylamino-benzyl)-phenyl- E2, 131 (l-Benzylamino-eihyl)-phenyl- E2, 131 (l-Benzylamino-pentyl)-phenyl- E2, 131 Benzyl-butyl- -ethylester XII/1, 255 [(Bcnzyl-carboxymethyl-amino)-methyl]-ethyl- ... 

Ethyl 3-(benzylamino)crotonate (67) R1 = CH2Ph, R2 = Et) can be obtained in two crystalline forms114, which on the basis of their spectra and other physical evidence were shown to be the Z- and is-isomers. On the other hand, 3-aminocrotonic esters with primary amino groups exist in the liquid state and in solution almost exclusively as the isomers with the chelated 68 Z (R1 = H) configuration115. 

Purify the residue by flash chromatography on silica, eluting with hexanes ethyl acetate to yield butyl [1-(benzylamino)-2,2-(diethoxyethane] phenylphosphinate 47 (1.1 g, 81%), an oil. 

Ethyl 3-(Benzylamino)-4,4,4-trifluorobut-2-enoate (5a) Typical Procedure ... 

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