Technology Process of (22S)-vitamin D3
There total 21 articles about (22S)-vitamin D3 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:
- Guidance literature:
-
Multi-step reaction with 8 steps
1: n-butyllithium / hexane; tetrahydrofuran / 0 deg C, 10 min, -78 deg C, 30 min
2: H2 / platinum black / methanol / 0.67 h / Ambient temperature
3: sodium hydride / tetrahydrofuran / 1 h / Heating
4: HCl / methanol; tetrahydrofuran / 1 h / Ambient temperature
5: pyridine / Ambient temperature
6: 1.) N-bromosuccinimide, 2.) p-toluenesulfonic acid / 1.) CCl4, reflux, 2.) acetone, RT
7: benzene; ethanol / Heating; Irradiation
8: 5percent KOH / methanol; tetrahydrofuran
With
pyridine; hydrogenchloride; potassium hydroxide; N-Bromosuccinimide; n-butyllithium; hydrogen; sodium hydride; toluene-4-sulfonic acid;
platinum;
In
tetrahydrofuran; methanol; ethanol; hexane; benzene;
DOI:10.1248/cpb.29.2254
- Guidance literature:
-
Multi-step reaction with 8 steps
1: n-butyllithium / hexane; tetrahydrofuran / 0 deg C, 10 min, -78 deg C, 30 min
2: H2 / platinum black / methanol / 0.67 h / Ambient temperature
3: sodium hydride / tetrahydrofuran / 1 h / Heating
4: HCl / methanol; tetrahydrofuran / 1 h / Ambient temperature
5: pyridine / Ambient temperature
6: 1.) N-bromosuccinimide, 2.) p-toluenesulfonic acid / 1.) CCl4, reflux, 2.) acetone, RT
7: benzene; ethanol / Heating; Irradiation
8: 5percent KOH / methanol; tetrahydrofuran
With
pyridine; hydrogenchloride; potassium hydroxide; N-Bromosuccinimide; n-butyllithium; hydrogen; sodium hydride; toluene-4-sulfonic acid;
platinum;
In
tetrahydrofuran; methanol; ethanol; hexane; benzene;
DOI:10.1248/cpb.29.2254
- Guidance literature:
-
Multi-step reaction with 8 steps
1: n-butyllithium / hexane; tetrahydrofuran / 0 deg C, 10 min, -78 deg C, 30 min
2: H2 / platinum black / methanol / 0.67 h / Ambient temperature
3: sodium hydride / tetrahydrofuran / 1 h / Heating
4: HCl / methanol; tetrahydrofuran / 1 h / Ambient temperature
5: pyridine / Ambient temperature
6: 1.) N-bromosuccinimide, 2.) p-toluenesulfonic acid / 1.) CCl4, reflux, 2.) acetone, RT
7: benzene; ethanol / Heating; Irradiation
8: 5percent KOH / methanol; tetrahydrofuran
With
pyridine; hydrogenchloride; potassium hydroxide; N-Bromosuccinimide; n-butyllithium; hydrogen; sodium hydride; toluene-4-sulfonic acid;
platinum;
In
tetrahydrofuran; methanol; ethanol; hexane; benzene;
DOI:10.1248/cpb.29.2254