Synthesis of sterically hindered secondary aminoether alcohols

Details Synthesis of sterically hindered secondary aminoether alcohols Synthesis of sterically hindered secondary aminoether alcohols

2008-09-30

2008-09-30

O'Sullivan, Peter G (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S506000, C564S507000, C564S508000

Reexamination Certificate

active

10587206

ABSTRACT:
Severely sterically hindered secondary aminoether alcohols are prepared by reacting an organic carboxylic acid or alkali metal salt of an organic carboxylic acid with a sulfonyl halide, a sulfuryl halide, a mixed sulfuryl ester halide or a mixed sulfuryl amide halide to yield a sulfonic-carboxylic anhydride compound which is then reacted with a dioxane to cleave the ring of the dioxane, yielding a cleavage product which cleavage product is then aminated with an alkylamine and hydrolyzed with base to yield the severely sterically hindered secondary aminoether alcohol.

REFERENCES:
patent: 4112051 (1978-09-01), Sartori et al.
patent: 4112052 (1978-09-01), Sartori et al.
patent: 4405585 (1983-09-01), Sartori et al.
patent: 4417075 (1983-11-01), Stogryn
patent: 4471138 (1984-09-01), Stogryn
patent: 4487967 (1984-12-01), Stogryn et al.
patent: 4508692 (1985-04-01), Savage et al.
patent: 4618481 (1986-10-01), Heinzelmann et al.
patent: 4665234 (1987-05-01), Stogryn
patent: 4892674 (1990-01-01), Ho et al.
patent: 4894178 (1990-01-01), Ho et al.
patent: 4961873 (1990-10-01), Ho et al.
patent: 5098604 (1992-03-01), Brouard et al.
patent: 5874623 (1999-02-01), Adkins et al.
patent: 2 017 524 (1979-10-01), None
patent: WO 2005/082835 (2005-09-01), None
patent: WO 2005/082836 (2005-09-01), None
patent: WO 2005/082837 (2005-09-01), None
Frazier and Kohl, “Selective Absorption of Hydrogen Sulfide from Gas Streams”, Industrial and Engineering Chemistry, Nov. 1950, pp. 2288-2292, vol. 42, No. 11, The Fluor Corporation Ltd., Los Angeles, California.
Overberger and Sarlo, “Mixed Sulfonic-Carboxylic Anhydrides”, J. Am. Chem. Soc., Mar. 4, 1963, pp. 2446-2448, vol. 85.
Karger and Mazur, “Cleavage of Ethers by Mixed Sulfonic-Carboxylic Anhydrides”, J. Am. Chem. Soc., Jul. 3, 1968, pp. 3878-3879, 90:14.

Affiliated with

Also associated with

Rating

Synthesis of sterically hindered secondary aminoether alcohols does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synthesis of sterically hindered secondary aminoether alcohols, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synthesis of sterically hindered secondary aminoether alcohols will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3947584