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 Benzyloxyacetyl chloride
19810-31-2

Benzyloxyacetyl chloride synthesis

7synthesis methods
-

Yield:19810-31-2 100%

Reaction Conditions:

with oxalyl dichloride;N,N-dimethyl-formamide in dichloromethane at 20; for 5 h;

Steps:

1.a Example 1(a) Benzyloxy acetyl chloride

Example 1(a)
Benzyloxy acetyl chloride
To benzyloxyacetic acid (10.0 g, 60.0 mmol, 8.6 mL) in dichloromethane (50 mL) was added oxalyl chloride (9.1 g, 72.0 mmol, 6.0 mL) and DMF (30.0 mg, 0.4 mmol, 32.0 μL) and stirred at RT for 3 h. There was initially a rapid evolution of gas as the reaction proceeded but evolution ceased as the reaction was complete. The dichloromethane solution was concentrated in vacuo to give a gum. This gum was treated with more oxalyl chloride (4.5 g, 35.7 mmol, 3.0 mL), dichloromethane (50 mL), and one drop of DMF. There was a rapid evolution of gas and the reaction was stirred for a further 2 h. The reaction was then concentrated in vacuo to afford 11.0 g (quantitative) of Benzyloxy acetyl chloride (1) as a gum. The structure was confirmed by 13C NMR (75 MHz, CDCl3) δC 73.6, 74.8, 128.1, 128.4, 128.6, 130.0, and 171.9.

References:

US2013/177501,2013,A1 Location in patent:Paragraph 0152

Benzyloxyacetyl chloride Related Search: