成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

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 2-(HYDROXYMETHYLENE)CYCLOHEXANONE
823-45-0

2-(HYDROXYMETHYLENE)CYCLOHEXANONE synthesis

1synthesis methods
-

Yield:823-45-0 100%

Reaction Conditions:

with sodium hydride in tetrahydrofuran;paraffin oil at 10 - 20;

Steps:

4.1

Intermediate 4: Preparation of (6-Fluoro-l-methoxy-9-methyl-9H-carbazoI-4- yl)-acetonitrileStepl: Preparation of 2-Hydroxymethylene-cyclohexanoneTo a solution of cyclohexanone (25 g, 0.26 mole) in THF (1 litre) was added ethyl formate (25.48 g, 0.34 mole), and then 60% sodium hydride in paraffin oil (12.24 g, 0.31 mole) at 10-20 0C and the mixture was stirred for overnight at room temperature. After completion of the reaction, the reaction mixture was filtered and the solid was washed with dry tetrahydrofuram (200 ml), dried under vacuum to give the desired product (32.1 g, yield 100%) as off-white solid. 1H NMR (300 MHz, OMSO-d6): δ 1.40 - 1.56 (m, 4H), 1.86 -1.90 (m, 2H), 2.06-2.11 (m, 2H), 9.18 (s, IH)

References:

WO2009/115874,2009,A2 Location in patent:Page/Page column 30

2-(HYDROXYMETHYLENE)CYCLOHEXANONE Related Search: