一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
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 TERT-BUTYL 4-(3-BROMOBENZYL)PIPERAZINE-1-CARBOXYLATE
865314-27-8

TERT-BUTYL 4-(3-BROMOBENZYL)PIPERAZINE-1-CARBOXYLATE synthesis

2synthesis methods
57260-71-6 Synthesis
1-BOC-Piperazine

57260-71-6
723 suppliers
$5.00/5g

-

Yield:865314-27-8 92%

Reaction Conditions:

with triethylamine in tetrahydrofuran at 20; for 1 h;

Steps:

14a

To a stirred solution of 1-bromo-3-(bromomethyl)benzene (677 mg, 2.71 mmol) in THF (10 ml) was added triethylamine (380 μL, 2.71 mmol), followed by tert-butyl piperazine-1-carboxylate (504 mg, 2.71 mmol). The mixture was allowed to stir at RT for one hour. The solvent was evaporated and the residue was purified with a silica gel column eluting with 1:10 EtOAc/hexanes to give the title compound as an oil (888 mg, 2.49 mmol, 92%). [M+H] calc'd for C16H24BrN2O2, 355; found, 355.

References:

US2006/84650,2006,A1 Location in patent:Page/Page column 92

TERT-BUTYL 4-(3-BROMOBENZYL)PIPERAZINE-1-CARBOXYLATE Related Search:

定襄县| 麻江县| 鹤峰县| 丰县| 铅山县| 密云县| 军事| 开鲁县| 张家口市| 五大连池市| 湄潭县| 鲁甸县| 大竹县| 即墨市| 双鸭山市| 曲靖市| 新安县| 新巴尔虎左旗| 靖江市| 皮山县| 左贡县| 井冈山市| 盐山县| 岚皋县| 伽师县| 大石桥市| 伊宁市| 郑州市| 长白| 大田县| 调兵山市| 沾益县| 古交市| 蒲江县| 报价| 大余县| 喜德县| 宁武县| 定陶县| 石嘴山市| 兴国县|