3- Amino-2-ethoxycarbonyl-5-phenyl

R,2S)-2-[(Ethoxycarbonyl)amino]-l-phenyl-l-propanol [Bronsted Acid Promoted Reduction of an a-Amino Ketone to an Erythro a-Hydroxy... 

R, 25) -2- [(ethoxycarbonyl) amino] -1 -phenyl-1 -propanol [Brdnsted acid promoted reduction of c/-amino ketone to erythro a-hydroxy amine], 124-125... 

Xanthylium, 9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(elhyl-amino)-2,7-dimethyl-, chloride. 

A -[6-Amino-9-[2-(ethoxycarbonyl)phenyl]-7-methyl-3//-xanthen-3-ylidene]-A-ethylethanaminium(l 4-), see R-00004 (2-Aminoethoxy)diphenoxyborane, A-00172 4-Amino-4 -ethoxydiphenylamine, in A-00185 (2-Aminoethoxy)diphenylborane, A-00173... 

The high reactivity of the exocyclic 4-NH- group is again illustrated by the reaction of 2-imino-3-phenyl-4-amino-5-(ethoxycarbonyl)-4-thiazoline with EtOjCCH SCN, which yields 134 (296), and by the intramolecular preparation of the dihydrothiazolo[4,5-h]pyridine derivative 136 (297) (Scheme 89). 

Thiophene, 2-amino-3-cyano-5-phenyl-synthesis, 4, 888-889 Thiophene, 3-amino-4,5-dihydro-cycloaddition reactions, 4, 848 Thiophene, 2-amino-3-ethoxycarbonyl-ring opening, 4, 73 Thiophene, 2-amino-5-methyl-synthesis, 4, 73 Thiophene, 2-anilino-synthesis, 4, 923-924 Thiophene, aryl-synthesis, 4, 836, 914-916 Thiophene, 2-(arylamino)-3-nitro-synthesis, 4, 892 Thiophene, azido-nitrenes, 4, 818-820 reactions, 4, 818-820 thermal fragmentation, 4, 819-820 Thiophene, 3-azido-4-formyl-reactions... 

Some examples for the introduction of amino protecting groups such as 2-(4-nitro-phenyl)ethoxycarbonyl (npeoc) or benzyloxycarbonyl (Z) were already given in the compilation of carbamates produced with imidazolium caiboxylates in Section 4.6.1. 

N H5C2OOC Nv /,N /-N H5C200C Hj/Pd -C/C2H5OH Normaldruck 20-25° l-( 2-Amino-phenyl)-4-ethoxycarbonyl-5-( ethoxy-carbonyl-melhyl)-lH-1,2,3-triazol 66 3... 

Chlor-3-phenyl-propensaure-nitril reagiert mit Mercaptoessigsaure-ethylester und Na-trium-ethanolat in siedendem Ethanol zu 3-Amino-2-ethoxycarbonyl-5-phenyl-thiophen (66%)4. 

R1 = R2 = H) gave the triazolo[l,5-a]pyrimidines (125), but with 124 (R1 = R2 = Me) afforded the dioxo derivative 126, and with a-cyano- y-butyrolactones (127) or 2-amino-3-ethoxycarbonyl-5,6-dihydro-4//-thiopyran (129) gave the triazolopyrimidines 128 and 130, respectively (81JHC1287). Treatment of 4-ethoxymethylene-2-phenyl-5(4//)-oxazolone (131) with 5-amino-3-methylthio-l//-1,2,4-triazoles gave the triazolo[l,5-a]pyrimidi-none 132 and the [4,3-a] isomer 133 (93H955) (Scheme 24). 

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