1- Amino-3- -6,6-dimethyl-5,6,7,8-tetrahydro

Troykyd Lecithin W.D.. See Lecithin Troysan 28. See Sodium 2-mercaptobenzothiazole Troysan 142. See 3,5-Dimethyl tetrahydro-2-H,1,3,5-thiadiazone-2-thione Troysan 174. See 2[(-Hydroxymethyl) amino] ethanol... 

D-fMO MO-Nonitol, 2,6-anhydro-3,S,7-trideoxy-l-C-([hydroxy-(tetrahydro-2-methoxy-5,6-dimethyl-4-methylene-2 H-pyran-2-yl) acetyl] amino)-5,5-di methyl-1, S,9-tri-0-rriethyl-, 2R-[2( j(,2[S (5-q], 5P,6P] -... 

A mixture consisting of 4 grams of 1,2,3,4-tetrahydro-4,4-dimethyl-7-methoxy-isochromane-dione-(1,3) (MP 95° to 97°C), 2.53 grams of 4-aminosulfonyl-phenyl-(2)-ethylamine and 150 ml of xylene was heated for 2 hours at its boiling point in an apparatus provided with a water separator. Thereafter, the reaction mixture was allowed to cool and was then vacuum-filtered, and the filter cake was recrystallized from n-propanoi in the presence of activated charcoal. 2.9 grams (58% of theory) of 1,2,3,4-tetrahydro-4,4-dimethyl-2-(p-amino-sulfonylphenyl-(2)-ethyl]-7-methoxy-isoquinolinedione-(1,3), MP 203° to 205°C, of the formula below were obtained. 

Athoxymethylen-amino)-4,5-dimethyl-3-cyan-aus 2-Amino-4,5-dimethyI-3-cyan-thiophen/ Orthoameisensaure-triathylester 351 2-Athvl-tetrahydro- 99 2-Alkyl- 99 2-Alkyl-tetrahydro- 99 Alkyl-tetrahydro- 293 (2-Amino-athyl)- 79... 

RN 59989-20-7 MF C.jH,oN40, CsH,>,NO MW 367.45 EINECS 262-012-4 CN 1,2,3,6-tetrahydro-l, 3-dimethyl-2,6-dioxo-7ff-purine-7-acetic acid compd. with 6-amino-2-methyl-2-heptaminol (1 1)... 

The rhodium acetate complex catalyzed the intramolecular C-H insertion of (/ )-diazo-fR)-(phenylsulfonyl)acet-amides 359 derived from (f )-amino acids to afford in high yield the 6-benzenesulfonyl-3,3-dimethyl-7-phenyl-tetrahydro-pyrrolo[l,2-c]oxazol-5-one 360 (Equation 63) <2002JOC6582, 2005TL143>. 

The reaction of 3-methyl-2-oxo-3-butenoates and dimethyl (amino-thiocarbonyl)malonate afforded (dihydro-1,3-thiazin-2-ylidene)malonate (1684) under acidic conditions, while in the presence of triethylamine, (tetrahydro-l,3-thiazin-2-ylidene)malonates (1685) were the products (88SC1043). 

Cyclic phosphonamides (tetrahydro-2//-l, 3,2-oxazaphosphorine 2-oxides) were obtained by reaction of / -amino alcohols with benzylphosphonic dichloride in moderate yield. In the case of the 6-monomethyl derivative the diastereomers were separated by chromatography. Deprotonation with /erz-butyllithium followed by alkylation occurred in a highly stereoselective manner (d.r. 96 4-99 1), independent of the nature of the alkylating reagent, counterion and solvent, as demonstrated for the 6,6-dimethyl derivative6. 

Disubstituierte 5-Brom-6-methyl-2,4-dioxo-l, 2,3,4-tetrahydro-pyrimidine rcagieren mit aliphatischen Aminen in Dimethylformamid unter Ersatz des Brom-Atoms durch eine Amino-Gruppe4. Dagegen erfolgt bei Reaktion mit aromatischen Aminen allylische Substitution durch eine Arylamino-Gruppe, und man erhalt z.B. 6-Anilino-1,3-dimethyl-... 

The amino moiety of the 3-carbohydrazide group of unsaturated and 6,7,8,9-tetrahydro-4-oxo-47/-pyrido[l,2-n]pyrimidine-3-carbohydrazides was condensed with acetone and 5-nitro-2-furoaldehyde (830MR687 88EUP252809). The reaction of 6-methyl-6,7,8,9-tetrahydro-4-oxo-4//-pyrido[l,2-a]pyrimidine-3-carbohydrazide with diethyl 2-[2-dimethyl-amino)vinyl]-6-methylpyridine-3,5-dicarboxylate in boiling ethanol for 4 hours afforded N-( 1,6-naphthyridin-6-yl)-4-oxo-4//-pyrido[ 1,2-a]pyrimi-dine-3-carboxamide 426 (85MIP1). 

Amino-2,7-dimethyl-3,8-dioxo-6-phenyl- 2,3,7,8-tetrahydro-2,7-naphthyridine- 4-carbonitrile >380 699, 1183... 

Reaction of 9-fluoro-8-isothiocyanato- and 8-iso(thio)cyanato-3,5, 6,7-tetrahydro-2//-pyrido[l,2,3-de]-l,4-benzoxazines with 2-amino-4,4-dimethylpyrroline, then with Br2, and with ethyl pipecolinate yielded 8-(6, 6-dimethyl-3,5,7,7-tetrahydropyrrolo[2,l-c][l,2,4]thiadiazol-3-ylidenamino)-9-fluoro and 8-(l,3-dioxo and l-oxo-3-thioxoperhydroimidazo[l,5-a]-pyridin-2-yl) derivatives, respectively (89EUP406993). Treatment of 9-fluoro-8-(2-hydroxymethylpiperidinothiocarbonylamino)-3,5,6,7-tetrahydro-2//-pyrido[l,2,3-de]-l,4-benzoxazine with HC1 gas in EtOH gave the 8-(perhy-dropyrrolo[l,2-c]thiazol-3-ylidenamino) derivative. 

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