Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

Base Information

• Chemical Name: Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester
• CAS No.: 1071111-50-6
• Molecular Formula: C₂₁H₂₇NO₇S
• Molecular Weight: 437.514
• Mol file: 1071111-50-6.mol

Synonyms:Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

Chemical Property of Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

There total 4 articles about Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl 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:

4,4-dimethyl-3-methylenepent-1-ene (2495-32-1) + 2,2-dimethyl-5-(p-tosyloxyimino)-1,3-dioxane-4,6-dione (215436-24-1) → Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester (1071111-50-6)

Guidance literature:

With dimethylaluminum chloride; In hexane; dichloromethane; at -78 ℃; for 3.5h;

DOI:10.1021/jo981014e

Reference yield:

cycl-isopropylidene malonate (2033-24-1) → Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester (1071111-50-6)

Guidance literature:

Multi-step reaction with 2 steps

1: 1.) sodium nitrite / 1) methanol, water, rt, 2 h; 2) pH 7, methanol, water, 0 deg C, 30 min

2: Me₂AlCl / CH₂Cl₂; hexane / 3.5 h / -78 °C

With dimethylaluminum chloride; sodium nitrite; In hexane; dichloromethane;

DOI:10.1021/jo981014e

Reference yield:

p-toluenesulfonyl chloride (98-59-9) → Toluene-4-sulfonic acid 3-tert-butyl-9,9-dimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester (1071111-50-6)

Guidance literature:

Multi-step reaction with 2 steps

1: 1.) sodium nitrite / 1) methanol, water, rt, 2 h; 2) pH 7, methanol, water, 0 deg C, 30 min

2: Me₂AlCl / CH₂Cl₂; hexane / 3.5 h / -78 °C

With dimethylaluminum chloride; sodium nitrite; In hexane; dichloromethane;

DOI:10.1021/jo981014e

upstream raw materials:

4,4-dimethyl-3-methylenepent-1-ene

2,2-dimethyl-5-(p-tosyloxyimino)-1,3-dioxane-4,6-dione

cycl-isopropylidene malonate

p-toluenesulfonyl chloride