(S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

Base Information

Chemical Name:(S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester
CAS No.:178484-39-4
Molecular Formula:C₂₂H₂₇BrN₂O₇
Molecular Weight:511.37
Hs Code.:

Synonyms:(S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

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Chemical Property of (S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

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Technology Process of (S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

There total 1 articles about (S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl 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:

: 138299-10-2
bis(pivaloyloxymethyl) 1,4-dihydro-1-(methoxymethyl)-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylate

: 178484-39-4
(S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

Guidance literature:: Multi-step reaction with 2 steps

1: lipase PS / diisopropyl ether; H₂O / Ambient temperature

2: pyridinium bromide perbromide / CH₂Cl₂; pyridine / -20 °C

With Lipase PS; pyridinium hydrobromide perbromide; In pyridine; dichloromethane; di-isopropyl ether; water;
DOI:10.1248/cpb.44.1132

Reference yield: 94.0%

: 1005-69-2
2-methoxy-5,5-dimethyl-1,3,2-dioxaphosphorinane

: 178484-39-4
(S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

: 178484-42-9
(S)-5-(5,5-Dimethyl-2-oxo-2λ⁵-[1,3,2]dioxaphosphinan-2-yl)-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

Guidance literature:: With tetrakis(triphenylphosphine) palladium⁽⁰⁾; triethylamine; In toluene; at 110 ℃; for 5h;
DOI:10.1248/cpb.44.1132

Reference yield:

: 178484-39-4
(S)-5-Bromo-1-methoxymethyl-2,6-dimethyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3-carboxylic acid 2,2-dimethyl-propionyloxymethyl ester

: (+)-Efonidipine

Guidance literature:: Multi-step reaction with 3 steps

1: 94 percent / Pd(PPh₃)4, NEt₃ / toluene / 5 h / 110 °C

2: 1.) aq. HCl, 2.) aq. NaOH / 1.) MeOH, 2.) MeOH

3: WSC*HCl, TEA, DMAP / dimethylformamide

With hydrogenchloride; dmap; sodium hydroxide; tetrakis(triphenylphosphine) palladium⁽⁰⁾; WSC*HCl; TEA; triethylamine; In N,N-dimethyl-formamide; toluene;
DOI:10.1248/cpb.44.1132