A simple approach to homotropanes and homotrop-7-enes
摘要:
1,4-Functionalisation of cycloocta-1,3-diene using a nitroso-cycloaddition strategy is followed by intramolecular cyclisation to yield 9-azabicyclo[4.2.1]nonanes (homotropanes) and -non-7-enes (homotrop-7-enes); the approach can be adapted to allow access to 1-methylhomotropanes.
Synthetic approaches to nortropanes and nortrop-6-enes; intramolecular displacement by nitrogen in 7-membered rings
摘要:
The synthesis of simple nortropane and nortrop-6-ene derivatives from cyclohepta-1,3-diene is described. The key intermediates are trans-1-amino-4-chloro-cycloheptanes and -cyclohept-2-enes which are derived efficiently from the corresponding cis-amino-alcohols and undergo intramolecular cyclisation. Corresponding derivatisation of cyclohexa- and cycloocta-1,3-dienes is explored and attempts to achieve Pd-catalysed cyclisation of 1-amino-4-acetoxy-derivatives is described. Nitrogen inversion data for selected nortropane derivatives are included.
Synthetic approaches to nortropanes and nortrop-6-enes; intramolecular displacement by nitrogen in 7-membered rings
作者:Antoinette Naylor (nee Bathgate)、Nicola Howarth、John R. Malpass
DOI:10.1016/s0040-4020(01)80313-6
日期:1993.1
The synthesis of simple nortropane and nortrop-6-ene derivatives from cyclohepta-1,3-diene is described. The key intermediates are trans-1-amino-4-chloro-cycloheptanes and -cyclohept-2-enes which are derived efficiently from the corresponding cis-amino-alcohols and undergo intramolecular cyclisation. Corresponding derivatisation of cyclohexa- and cycloocta-1,3-dienes is explored and attempts to achieve Pd-catalysed cyclisation of 1-amino-4-acetoxy-derivatives is described. Nitrogen inversion data for selected nortropane derivatives are included.
A simple approach to homotropanes and homotrop-7-enes
作者:John R. Malpass、Craig Smith
DOI:10.1016/0040-4039(92)88069-h
日期:1992.1
1,4-Functionalisation of cycloocta-1,3-diene using a nitroso-cycloaddition strategy is followed by intramolecular cyclisation to yield 9-azabicyclo[4.2.1]nonanes (homotropanes) and -non-7-enes (homotrop-7-enes); the approach can be adapted to allow access to 1-methylhomotropanes.