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
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
743 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: