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 METHYL OXALYL CHLORIDE
5781-53-3

METHYL OXALYL CHLORIDE synthesis

7synthesis methods
-

Yield:5781-53-3 93%

Reaction Conditions:

in diethyl ether at 0; for 2 h;

Steps:

1 Synthesis of monomethyl oxalyl chloride

Oxalyl chloride (79.64 g, 627.5 mmol, 1.05 eq) was dissolved in diethylether (40 mL) and carefully mixed at0°C with a solution of methanol (19.15 g, 597.6 mmol, 1.00 eq) in diethylether (50 mL). The reaction mixture was stirredat 0°C for 2h and the crude product purified by distillation (bp 116°C). Monomethyl oxalyl chloride was isolated in 93%yield (68.05 g, 555.5 mmol). 1H-NMR (300 MHz, MeCN-d3): δ / ppm = 3.93 (s, 3H, COOCH3). 13C-NMR (75 MHz, MeCNd3):δ/ ppm = 162.4 (COCI), 156.8 (COOCH3), 56.0 (COOCH3).

References:

EP2940010,2015,A1 Location in patent:Paragraph 0127; 0128

METHYL OXALYL CHLORIDE Related Search: