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 3-OXO-3H-BENZO[F]CHROMENE-2-CARBOXYLIC ACID
4361-00-6

3-OXO-3H-BENZO[F]CHROMENE-2-CARBOXYLIC ACID synthesis

12synthesis methods
-

Yield:4361-00-6 92%

Reaction Conditions:

with sodium hydroxide in ethanol at 80; for 0.25 h;

Steps:

2.2.5. General synthetic procedure of compounds 12a-t

General procedure: Compound 11 (5 mmol) in EtOH (5 mL) were added 10% NaOH (10mL). Next, the mixture was warmed to 80 °C and stirred for 15 min. The resulting mixture poured off in cold water to precipitate a large amount of solid product. The solid product was filtered off and recrystallized by EtOH to afford acid compounds 12a-t (except 12d, 12i, 12m, and 12q)in good yields.

References:

Li, Wen-Bo;Qiao, Xue-Peng;Wang, Zi-Xiao;Wang, Shuai;Chen, Shi-Wu [Bioorganic Chemistry,2020,vol. 105,art. no. 104427]

3-OXO-3H-BENZO[F]CHROMENE-2-CARBOXYLIC ACID Related Search: