(±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester

Base Information

Chemical Name:(±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester
CAS No.:1291076-55-5
Molecular Formula:C₂₃H₂₃NO₄
Molecular Weight:377.44
Hs Code.:

Synonyms:(±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester

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Chemical Property of (±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester

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Technology Process of (±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester

There total 4 articles about (±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester 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: 94.0%

: 1291076-18-0
(±)-(E)-3-[4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester hydrochloride

: 100-52-7
benzaldehyde

: 1291076-55-5
(±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester

Guidance literature:: (±)-(E)-3-[4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester hydrochloride; With sodium hydrogencarbonate; In dichloromethane; water;

benzaldehyde; With sodium tris(acetoxy)borohydride; In dichloromethane; at 20 ℃; for 2h;

Reference yield:

: 1450-75-5
5-Bromo-2-hydroxyacetophenone

: 1291076-55-5
(±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester

Guidance literature:: Multi-step reaction with 4 steps

1.1: pyrrolidine / methanol / 4 h / 70 °C / Microwave irradiation

2.1: triethylamine; tris-(o-tolyl)phosphine / palladium diacetate / N,N-dimethyl-formamide / 3 h / 100 °C / Inert atmosphere

3.1: hydrogenchloride / dichloromethane; 1,4-dioxane / 1 h / 20 °C

4.1: sodium hydrogencarbonate / dichloromethane; water

4.2: 2 h / 20 °C

With pyrrolidine; hydrogenchloride; sodium hydrogencarbonate; triethylamine; tris-(o-tolyl)phosphine; palladium diacetate; In 1,4-dioxane; methanol; dichloromethane; water; N,N-dimethyl-formamide;

Reference yield:

: 1291076-20-4
(±)-6-bromo-4-oxospiro(chromane-2,3'-pyrrolidine)-1'-carboxylic acid tert-butyl ester

: 1291076-55-5
(±)-(E)-3-[1'-benzyl-4-oxospiro(chromane-2,3'-pyrrolidine)-6-yl]acrylic acid methyl ester

Guidance literature:: Multi-step reaction with 3 steps

1.1: triethylamine; tris-(o-tolyl)phosphine / palladium diacetate / N,N-dimethyl-formamide / 3 h / 100 °C / Inert atmosphere

2.1: hydrogenchloride / dichloromethane; 1,4-dioxane / 1 h / 20 °C

3.1: sodium hydrogencarbonate / dichloromethane; water

3.2: 2 h / 20 °C

With hydrogenchloride; sodium hydrogencarbonate; triethylamine; tris-(o-tolyl)phosphine; palladium diacetate; In 1,4-dioxane; dichloromethane; water; N,N-dimethyl-formamide;