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!

127861-30-7

METHYL 2-CHLORO-6-METHOXYPYRIMIDINE-4-CARBOXYLATE synthesis

3synthesis methods
-

Yield:127861-30-7 90%

Reaction Conditions:

in methanol at 20; for 0.25 h;Product distribution / selectivity;

Steps:

61.A

Example 61; N-hydroxy-2-(phenylamino)-6-(4-(pyridin-3-ylethynyl)phenyl)pyrimidine-4- carboxamide, trifluoroacetic acid salt; A. Methyl 2-chloro-6-methoxypyrimidine-4-carboxylate; To a solution of methyl 2,6-dichloropyrimidine-4-carboxylate (6.73 g, 32.51 mmol) in MeOH (5 mL) was added sodium methoxide, 0.5M solution in MeOH (58.5 mL, 29.26 mmol) and the reaction was stirred at room temperature. LC-MS after 15 minutes indicated reaction was complete. The reaction mixture was diluted with water and extracted three times with ethyl acetate. The combined organic extracts were dried over magnesium sulfate, filtered and evaporated to yield desired product as a white solid (5.9g, 90% yield). Regiochemistry was confirmed by NMR. LC-MS: [M+H]+ 203 Mass: calculated for C7H7ClN2O3, 202.60 IH NMR (300 MHz, DMSO-J6) δ ppm 3.90 (s, 3 H) 4.01 (s, 3 H) 7.45 (s, 1 H)

References:

WO2010/100475,2010,A1 Location in patent:Page/Page column 140-141

METHYL 2-CHLORO-6-METHOXYPYRIMIDINE-4-CARBOXYLATE Related Search: