Syntheses Producing Fully Unsaturated Quinolizinium Salts

Syntheses Producing Fully Unsaturated Quinolizinium Salts 

Syntheses of this type were reported in an earlier review and are summarized in Eqs. (1 -4). 

The routes due to Richards and Stevens2 (Eq. 1), Westphal and Feix3 4 (Eq. 3), and Hansen and Amstutz5 (Eq. 4) have not been further developed. 

An examination of the scope and limitations of the synthesis due to Westphal et al.H (Eq. 2) was made by Hough and Jones9 in their attempts to prepare aminoquinolizinium salts. A possible steric inhibition was noted 

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Syntheses Producing Fully Unsaturated Quinolizinium Salts... 

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