天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

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 6-Quinazolinecarboxaldehyde (9CI)
439811-22-0

6-Quinazolinecarboxaldehyde (9CI) synthesis

5synthesis methods
-

Yield:439811-22-0 68%

Reaction Conditions:

with 2,6-dimethylpyridine;sodium periodate;osmium(VIII) oxide in 1,4-dioxane;water;tert-butyl alcohol at 20; for 0.5 h;

Steps:

1.d

A mixture of the vinyl compound from example 1c (65 mg, 0.416 mmol), 2.5% osmium tetraoxide in f-butanol (85 mg, 0.008 mmol), sodium periodate (356 mg, 1.66 mmol) and 2,6-lutidene (97 μl_, 0.833 mmol) in dioxane (3mL) and water (1 ml_) was stirred at RT for 30 min. The reaction mixture was diluted with water (10 ml_) and extracted with DCM (2 x 30 ml_).The organic layer was dried over MgSO4, filtered and solvents removed under reduced pressure to yield the title compound (45 mg, 68%) which was used in the next step without further purification. C9H6N2O MS(ES+) m/e 159 [M+H]+

References:

WO2007/38331,2007,A2 Location in patent:Page/Page column 28

6-Quinazolinecarboxaldehyde (9CI) Related Search: