午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List TRIETHYLAMINE OLEATE
10103-17-0

TRIETHYLAMINE OLEATE synthesis

1synthesis methods
-

Yield:54422-45-6 75%

Reaction Conditions:

in tetrahydrofuran;

Steps:

2 Preparation of 2-oleoylamino-1,3-octadecanediol

EXAMPLE 2 Preparation of 2-oleoylamino-1,3-octadecanediol 3 ml of ethyl chloroformate (31 mmol) in 5 ml of tetrahydrofuran are solubilized in a round-bottomed flask under an inert atmosphere; this solution being cooled to -15° C., 11.3 g of triethylamine oleate (29.5 mmol) previously solubilized in 10 ml of tetrahydrofuran, are added dropwise. After stirring for 2 hours at room temperature, the reaction mixture is slowly poured, under an inert atmosphere, into 8.9 g of (D,L)-2-amino-1,3-octadecanediol prepared in the 1st stage of Example 1 (29.5 mmol) solubilized in 40 ml of tetrahydrofuran at 30° C. After stirring for 1 hour at 30° C., under an inert atmosphere, (thin layer chromatography on silica gel, eluent methylene chloride/methanol/ammonium hydroxide 15/3.5/0.6), the reaction mixture is washed with water and then evaporated to dryness under vacuum. The crude product obtained is chromatographed on a silica column (eluent: ethyl acetate/heptane 5/3) and 12.5 g of white crystals (yield 75%) are obtained after evaporation of the solution solvent under vacuum.

References:

US5618523,1997,A

TRIETHYLAMINE OLEATE Related Search: