Toluene-4-sulfonic acid 5,9,9-trimethyl-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 5,9,9-trimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester
CAS No.:1071068-55-7
Molecular Formula:C₁₈H₂₁NO₇S
Molecular Weight:395.433
Hs Code.:

Synonyms:Toluene-4-sulfonic acid 5,9,9-trimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

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Chemical Property of Toluene-4-sulfonic acid 5,9,9-trimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

Chemical Property:

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MSDS Files:: SDS file from LookChem

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Technology Process of Toluene-4-sulfonic acid 5,9,9-trimethyl-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 5,9,9-trimethyl-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: 78.0%

: 2004-70-8,17410-45-6,25212-15-1,64940-84-7
1-methylbuta-1,3-diene

: 215436-24-1
2,2-dimethyl-5-(p-tosyloxyimino)-1,3-dioxane-4,6-dione

: 1071068-55-7
Toluene-4-sulfonic acid 5,9,9-trimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

Guidance literature:: With dimethylaluminum chloride; In hexane; dichloromethane; at -78 ℃; for 4h;
DOI:10.1021/jo981014e

Reference yield:

: 2033-24-1
cycl-isopropylidene malonate

: 1071068-55-7
Toluene-4-sulfonic acid 5,9,9-trimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

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: 78 percent / Me₂AlCl / CH₂Cl₂; hexane / 4 h / -78 °C

With dimethylaluminum chloride; sodium nitrite; In hexane; dichloromethane;
DOI:10.1021/jo981014e

Reference yield:

: 98-59-9
p-toluenesulfonyl chloride

: 1071068-55-7
Toluene-4-sulfonic acid 5,9,9-trimethyl-7,11-dioxo-8,10-dioxa-1-aza-spiro[5.5]undec-3-en-1-yl ester

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: 78 percent / Me₂AlCl / CH₂Cl₂; hexane / 4 h / -78 °C

With dimethylaluminum chloride; sodium nitrite; In hexane; dichloromethane;
DOI:10.1021/jo981014e