(3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

Base Information

Chemical Name:(3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline
CAS No.:1253798-36-5
Molecular Formula:C₁₆H₂₄N₂O₂
Molecular Weight:276.379
Hs Code.:

Synonyms:(3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

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Chemical Property of (3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

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Technology Process of (3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

There total 2 articles about (3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

: 1253798-54-7
(3S,11bR)-N-[2-(3,4-dimethoxyphenyl)ethyl]-2-[3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinolin-2-yl]acetamide

: 1253798-36-5
(3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

: 1253798-41-2,66833-20-3
(1'R,3S,11bR)-2-[(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)methyl]-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

: 1253798-35-4,66833-20-3
(1'S,3S,11bR)-2-[(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)methyl]-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

Guidance literature:: Multi-step reaction with 2 steps

1: trichlorophosphate / toluene / 0.75 h / Reflux

2: palladium 10% on activated carbon; hydrogen / tetrahydrofuran / 28 h

With palladium 10% on activated carbon; hydrogen; trichlorophosphate; In tetrahydrofuran; toluene; 1: Bischler-Napieralski reaction;
DOI:10.1002/cmdc.201000230

Reference yield:

: 1253798-40-1
(3S,11bR)-2-(6,7-dimethoxy-3,4-dihydroisoquinolin-1-ylmethyl)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

: 1253798-36-5
(3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

: 1253798-41-2,66833-20-3
(1'R,3S,11bR)-2-[(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)methyl]-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

: 1253798-35-4,66833-20-3
(1'S,3S,11bR)-2-[(6,7-dimethoxy-1,2,3,4-tetrahydroisoquinolin-1-yl)methyl]-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

Guidance literature:: With palladium 10% on activated carbon; hydrogen; In tetrahydrofuran; for 28h;
DOI:10.1002/cmdc.201000230

Reference yield: 70.0%

: 1253798-36-5
(3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline

: 14301-31-6
2-chloro-N-(2-(3,4-dimethoxyphenyl)ethyl)acetamide

: 1253798-54-7
(3S,11bR)-N-[2-(3,4-dimethoxyphenyl)ethyl]-2-[3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinolin-2-yl]acetamide

Guidance literature:: (3S,11bR)-3-ethyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrazino[2,1-a]isoquinoline; With N-ethyl-N,N-diisopropylamine; In N,N-dimethyl-formamide; at 0 ℃; for 0.0833333h;

2-chloro-N-(2-(3,4-dimethoxyphenyl)ethyl)acetamide; In N,N-dimethyl-formamide; at 90 ℃; for 14h;
DOI:10.1002/cmdc.201000230