ChemicalBook CAS DataBase List 2-azaspiro[3.3]heptane

2-azaspiro[3.3]heptane synthesis

5synthesis methods

Product Name:2-azaspiro[3.3]heptane
CAS Number:665-04-3
Molecular formula:C6H11N
Molecular Weight:97.16

91-20-3 Synthesis

91-20-3
507 suppliers
$13.19/250mg

665-04-3
65 suppliers
$45.00/10mg

Yield: 83%

Reaction Conditions:

in 1,2-dimethoxyethane

Steps:

2.4 (4)
(4)
The preparation of 2-azaspiro[3.3]heptane
2-tosyl-2-azaspiro[3.3]heptanes (7.3g, 0.03mol) was dissolved in 30mL 1,2-dimethoxyethane.
To the resulting mixture was added dropwise 50mL of a fresh-made sodium naphthalene solution under cooling in ice-water.
The resulting mixture was reacted at room temperature for 1h.
The reaction was quenched with water.
The reaction liquor was concentrated and then purified with a silica-gel column (dichlormethane:methanol=20: 0-1: 0) to produce 2.41g 2-azaspiro[3.3]heptane in a yield of 83%.

References:

Xuanzhu Pharma Co., Ltd.;WU, Frank;WANG, Aichen EP2716633, 2014, A1 Location in patent:Page/Page column