3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

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Chemical Name:3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl ester
CAS No.:203440-78-2
Molecular Formula:C₂₇H₃₄N₂O₅
Molecular Weight:466.577
Hs Code.:

Synonyms:3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

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Chemical Property of 3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

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Technology Process of 3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

There total 7 articles about 3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl 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: 48.0%

: 10445-91-7
4-(Chloromethyl)pyridine

: 203441-77-4
3-(3-Cyclopentyloxy-4-methoxy-phenyl)-2-oxo-pyrrolidine-1-carboxylic acid tert-butyl ester

: 203440-78-2
3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

: 4-tert-Butoxycarbonylamino-2-(3-cyclopentyloxy-4-methoxy-phenyl)-2-pyridin-4-ylmethyl-butyric acid

: 4-tert-Butoxycarbonylamino-2-(3-cyclopentyloxy-4-methoxy-phenyl)-2-pyridin-4-ylmethyl-butyric acid pyridin-4-ylmethyl ester

Guidance literature:: With sodium hydride; In N,N-dimethyl-formamide; for 20h; Ambient temperature;
DOI:10.1016/S0960-894X(98)00036-5

Reference yield:

: 1131-94-8
homoisovanillic acid

: 203440-78-2
3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

Guidance literature:: Multi-step reaction with 6 steps

1: 95 percent / HCl (gas) / 20 h / Ambient temperature

2: 56 percent / K₂CO₃ / dimethylformamide / 20 h / 70 °C

3: 1.) KHMDS / 1.) dimethoxyethane, -78 deg C, 2.) dimethoxyethane, -78 deg C, 3 h

4: 57 percent / H₂ / Ra-Ni / methanol / 20 h / 50 °C

5: 63 percent / Et₃N, DMAP / 20 h / Ambient temperature

6: 48 percent / NaH / dimethylformamide / 20 h / Ambient temperature

With hydrogenchloride; dmap; hydrogen; potassium hexamethylsilazane; sodium hydride; potassium carbonate; triethylamine; Ra-Ni; In methanol; N,N-dimethyl-formamide;
DOI:10.1016/S0960-894X(98)00036-5

Reference yield:

: 15964-81-5
methyl 3-hydroxy-4-methoxyphenylacetate

: 203440-78-2
3-(3-cyclopentyloxy-4-methoxy-phenyl)-2-oxo-3-pyridin-4-ylmethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

Guidance literature:: Multi-step reaction with 5 steps

1: 56 percent / K₂CO₃ / dimethylformamide / 20 h / 70 °C

2: 1.) KHMDS / 1.) dimethoxyethane, -78 deg C, 2.) dimethoxyethane, -78 deg C, 3 h

3: 57 percent / H₂ / Ra-Ni / methanol / 20 h / 50 °C

4: 63 percent / Et₃N, DMAP / 20 h / Ambient temperature

5: 48 percent / NaH / dimethylformamide / 20 h / Ambient temperature

With dmap; hydrogen; potassium hexamethylsilazane; sodium hydride; potassium carbonate; triethylamine; Ra-Ni; In methanol; N,N-dimethyl-formamide;
DOI:10.1016/S0960-894X(98)00036-5