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!

4-PYRROLIDIN-1-YL-PIPERIDINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER synthesis

4synthesis methods
79099-07-3 Synthesis
N-(tert-Butoxycarbonyl)-4-piperidone

79099-07-3
543 suppliers
$5.00/5g

-

Yield:902837-26-7 79%

Reaction Conditions:

Stage #1: pyrrolidine;N-tert-butyloxycarbonylpiperidin-4-onewith sodium acetate in tetrahydrofuran;acetic acid at 20; for 1 h;
Stage #2: with sodium tetrahydroborate;sodium acetate in tetrahydrofuran;acetic acid; for 16 h;

Steps:

10

The white crystalline compound (4.5 g, 0.0226 mol, 1.0 eq.), sodium acetate (2.8 g, 0.034 mol, 1.5 eq.), acetic acid (2.2 ml) and pyrrolidine (2.2 g, 0.031 mol, 1.4 eq) was dissolved in tetrahydrofuran (100 mL). after stirring for 1 hour at room temperature, was added thereto boron hydride, sodium acetate (9.6 g, 0.0452 mol, 2.0 eq.). After 16 hours of reaction, concentrated under reduced pressure, adjusted to alkaline with aqueous sodium hydroxide, and extracted with dichloromethane. The organic phase was dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure to give a colorless oily liquid 4-pyrrolidinylpiperidine-1-carboxylic acid tert-butyl ester (4.5 g, yield: 79%).

References:

CN105622638,2016,A Location in patent:Paragraph 0209