![]() | |
Names | |
---|---|
Other names 1-Phenyl-1,3,8-triazaspiro[4,5]decan-4-one | |
Identifiers | |
3D model (JSmol) | |
ChEMBL | |
ChemSpider | |
EC Number |
|
MeSH | spirodecanone |
PubChem CID | |
CompTox Dashboard (EPA) | |
| |
| |
Properties | |
C13H17N3O | |
Molar mass | 231.299 g·mol−1 |
Density | g/cm3 (20 °C) |
Hazards | |
GHS labelling: | |
![]() | |
Warning | |
H315, H319, H335 | |
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Spirodecanone refers to a class of spirocyclic ketones, often studied for their potential applications in medicinal chemistry. One notable example is 1-Phenyl-1,3,8-triazaspiro[4.5]decan-4-one, which has been investigated as a metabolite of neuroleptic agents like Fluspirilene. It has a molecular formula of C13H17N3O and a melting point of 188-191 °C.
The original synthesis was first disclosed by Paul Janssen, [1] and was covered by Daniel Lednicer in one of his books. [2]
A recent synthesis of spirodecanone is disclosed: [3] [4]
The Strecker-like condensation between N-benzyl-4-piperidone [3612-20-2] (1), aniline and TMSCN [7677-24-9], gives 4-anilino-1-benzylpiperidine-4-carbonitrile [968-86-5] (2). Acid catalyzed partial hydrolysis of the nitrile to the amide afforded 4-anilino-1-benzylpiperidine-4-carboxamide [1096-03-3] (3). Reaction with DMF-DMA forms the spiroimidazolidone ring giving 8-benzyl-1-phenyl-1,3,8-triazaspiro[4.5]dec-2-en-4-one [974-42-5] (4). The imine bond is reduced with sodium borohydride giving 8-benzyl-1-phenyl-1,3,8-triaza-spiro[4.5]decan-4-one [974-41-4] (5). Catalytic hydrogenation then removes the benzyl group (6).
It is noteworthy to mention that intermediate 4 finds dual use in the synthesis of some highly potent fentanyl analogs. [5]
Listed in alphabetical order: