3-Methyl-l-butanamine

Mass spectrum of 3-methyl-l-butanamine (isopentylamine). The most characteristic fragmentation pattern of aliphatic amines is )3-cleavage. 

The allylically activated chiral methanimidamides are more reactive and can be prepared from 2,5-dihydro-l//-pyrrole or 1,2,5,6-tetrahydropyridine by heating with a chiral auxiliary substituted methanimidamide in toluene. Deprotonation of the more acidic 1 -iminomethy 1-2,5-dihydro-1//-pyrrole with butyllithium was complete after a few minutes, even at — 100 °C41. Alkylation afforded a mixture of regioisomers, 2-alkylated 2,5-dihydro-l //-pyrrole 1 (n = 1) and 3-alkylated 2,3-dihydro-l//-pyrrole 2 (n = 1), the former strongly predominating (about 92 8). During hydrazinolysis of the 2-substituted 2,5-dihydro-1 //-pyrrole 1 (n = 1) the minor product decomposed, thus separation of the regioisomers was unnecessary. About 80-85% of the chiral auxiliary (S)-l- m-butoxy-3-methyl-2-butanamine was recovered after hydrazinolysis. 

N-Methyl-4-[2-(phenylmethyl)phenoxy]-l-butanamine was prepared from 2-(5-bromopentyloxy)diphenylmethane and of methylamine in ethanol is at 50°C in a sealed tube (heating for 3 hours). Ethanol and excess methylamine are distilled in vacuo, 2 N NaOH aqueous solution is added, and the reaction product is extracted with ether. Dry hydrogen chloride gas is passed into the ether solution, and the precipitate collected by filtration. Recrystallization from ethanol-ether gives N-methyl-4-[2-(phenylmethyl)phenoxy]-l-butanamine hydrochloride, m.p. 87.5-89.5°C. 

P.7) 1-Butanamine, 3-methyl-, 3-methylbutan-l-amine, isopentylamine, isopentylazane, isoamylamine leucamine [107-85-7] FEMA 3219... 

N-methyl-l-(l,3-benzodioxol-5-yl)-2-butanamine, MBDB, Eden 3-methoxy-4,5-methylenedioxyamphetamine 3,4,5 -trimethoxy amphetam ine... 

ATS include the amphetamine-group substances, consisting of methamphetamine and amphetamine, and the ecstasy-group substances, consisting mainly of 3,4-methylenedioxymethamphetamine (ecstasy or MDMA), 3,4-methylene-dioxyamphetamine (MDA), 3,4-methylenedioxy-A-ethylamphetamine (MDEA), and A-methyl-l-(3,4 methylenedioxyphenyl)-2-butanamine (MBDB)(UNODC, 2009). 

Methyl-AT-isopentyl-l-butanamine Methyl isopentyl ketone Methylisopropylamine l-Methyl-4-isopropyb2,3-dioxabicyclo[2.2.2]oct-5-ene... 

METHYL-J MBDB EDEN 2-METHYLAMINO-l-(3,4-METHYLENEDIOXYPHENYL)BUTANE N-METHYL-1-(1,3-BENZODIOXOL-5-YL)-2-BUTANAMINE... 

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