3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5⁽¹⁰⁾-trien-1-7-one

Base Information

• Chemical Name: 3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5⁽¹⁰⁾-trien-1-7-one
• CAS No.: 897664-60-7
• Molecular Formula: C₃₀H₃₆O₃
• Molecular Weight: 444.614
• Mol file: 897664-60-7.mol

Synonyms:3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5⁽¹⁰⁾-trien-1-7-one

Chemical Property of 3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5⁽¹⁰⁾-trien-1-7-one

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of 3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5⁽¹⁰⁾-trien-1-7-one

There total 1 articles about 3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5⁽¹⁰⁾-trien-1-7-one 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: 81.0%

16-hydroxymethylene-3-benzyloxyestra-1,3,5(10)-trien-17-one (444196-21-8) + tert-butyl alcohol (75-65-0) → 3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5(10)-trien-1-7-one (897664-60-7)

Guidance literature:

With toluene-4-sulfonic acid; In benzene; Heating;

DOI:10.1016/j.steroids.2005.06.001

Reference yield: 85.0%

3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5(10)-trien-1-7-one (897664-60-7) + Benzo[b]thiophene (95-15-8,11095-43-5) → 17-(benzothien-2'-yl)-3-benzyloxy-16-formyl-estra-1,3,5(10),16-tetraene (897664-64-1)

Guidance literature:

Benzo[b]thiophene; With n-butyllithium; In diethyl ether; pentane; at -78 - 0 ℃; for 1.5h;

3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5⁽¹⁰⁾-trien-1-7-one; In tetrahydrofuran; diethyl ether; pentane; at 0 ℃; for 5h;

With water; toluene-4-sulfonic acid; In tetrahydrofuran; diethyl ether; pentane; for 25h;

DOI:10.1016/j.steroids.2005.06.001

Reference yield: 82.0%

3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5(10)-trien-1-7-one (897664-60-7) + 2-bromothiophene (1003-09-4) → 3-benzyloxy-16-formyl-17-(2-thienyl)-estra-1,3,5(10),16-tetraene (897664-63-0)

Guidance literature:

2-bromothiophene; With n-butyllithium; In diethyl ether; pentane; at -78 - 0 ℃; for 1.5h;

3-benzyloxy-16-tert-butoxymethylene-estra-1,3,5⁽¹⁰⁾-trien-1-7-one; In tetrahydrofuran; diethyl ether; pentane; at 0 ℃; for 5h;

With water; toluene-4-sulfonic acid; In tetrahydrofuran; diethyl ether; pentane; for 25h;

DOI:10.1016/j.steroids.2005.06.001

upstream raw materials:

16-hydroxymethylene-3-benzyloxyestra-1,3,5⁽¹⁰⁾-trien-17-one

tert-butyl alcohol

Downstream raw materials:

3-benzyloxy-16-formyl-17-(2-thienyl)-estra-1,3,5⁽¹⁰⁾,16-tetraene

17-(benzothien-2'-yl)-3-benzyloxy-16-formyl-estra-1,3,5⁽¹⁰⁾,16-tetraene

3-benzyloxy-16-ethynyl-17-(thien-2'-yl)-estra-1,3,5⁽¹⁰⁾,16-tetraene

3-benzyloxy-16-(2',2'-dibromoethenyl)-17-(thien-2''-yl)-estra-1,3,5⁽¹⁰⁾,16-tetraene