I found the field of Chemistry very interesting. Saw the article Metal-Free Cyclocarboamination of ortho-Formyl Phenylacetylenes with Secondary Amines: Access to 1,3-Diamino-1H-Indenes and 3-Amino-1-Indanones published in 2019. SDS of cas: 177-11-7, Reprint Addresses Wong, MK (corresponding author), Hong Kong Polytech Univ, State Key Lab Chem Biol & Drug Discovery, Dept Appl Biol & Chem Technol, Hong Kong, Peoples R China.. The CAS is 177-11-7. Through research, I have a further understanding and discovery of 1,4-Dioxa-8-azaspiro[4.5]decane
This work first discloses a new strategy for amine activation to give reactive amine anion by in situ generated iminium cation-amine anion pair through decomposition of sterically hindered aminals. Utilizing this strategy, a highly regio- and chemoselective cyclocarboamination of ortho-formyl phenylacetylenes with secondary amines has been realized under metal-free mild reaction conditions. The cyclocarboamination with notably tunable product profiles depends on the separation and purification procedure, a diverse range of 1, 3-diamino-1H-indenes (essentially reactive enamines) and 3-amino-1-indanones were obtained, respectively. Moreover, using iodine as an electrophile to couple with various ortho-formyl phenylacetylenes and secondary amines, a series of 3-amino-2-iodo-1-indanones were efficiently achieved with four bonds (C=O, C-C, C-N and C-I) formation in an one-pot three-component reaction. These results demonstrated an unprecedented methodology for the construction of highly functionalized 1H-indene and 1-indanone compounds.
SDS of cas: 177-11-7. Bye, fridends, I hope you can learn more about C7H13NO2, If you have any questions, you can browse other blog as well. See you lster.
Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem