Ethanolamine → 5-Aza-12-oxadispiro[3.1.4.2]dodecane

Beteiligte Stoffe

Reaktionsschritte

1-Aminocyclopentanecarboxylic acid was converted to the methyl ester according to Method B1c, Step 1. The ester reduced to 1-hydroxymethylcyclopentanamine according to Method B1c, Step 2. The 2-hydroxyethylamine was reacted with cyclobutanone according to Method B4a, Step 1 to give 5-aza-12-oxadispiro[3.1.4.2]dodecane. The oxazolidine was reduced according to Method B4a, Step 2 to give 1-(cyclobutylamino)-1-(hydroxymethyl)cyclopentane. The substituted 2-hydroxyethylamine was reacted with SOCl2 according to Method B7b to 1-(cyclobutylamino)-1-(chloromethyl)cyclopentane. The 2-chloroethylamine was reacted with 2-methyl-4-nitrophenyl isocyanate according to Method C4a to afford 1-cyclobutyl-2-(2-methyl-4-nitrophenylimino)-3-oxa-1-azaspiro[4.4]nonane.

Herkunft & Nachweise