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 4-Hydroxy-2-oxo-2H-1-benzopyran-3-carboxylic acid ethyl ester
1821-20-1

4-Hydroxy-2-oxo-2H-1-benzopyran-3-carboxylic acid ethyl ester synthesis

6synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 3 steps
1.1: dicyclohexyl-carbodiimide / tetrahydrofuran / 0 °C / Inert atmosphere
2.1: sodium hydride / tetrahydrofuran; mineral oil / 1 h / 0 - 20 °C / Inert atmosphere
2.2: 2 h / 0 - 20 °C / Inert atmosphere
3.1: ethanol; sodium / 24 h / 20 °C

References:

Stefanou, Valentina;Matiadis, Dimitris;Melagraki, Georgia;Afantitis, Antreas;Athanasellis, Giorgos;Igglessi-Markopoulou, Olga;McKee, Vickie;Markopoulos, John [Molecules,2011,vol. 16,# 1,p. 384 - 402]

4-Hydroxy-2-oxo-2H-1-benzopyran-3-carboxylic acid ethyl ester Related Search: