90. “6-Azabicyclo[3.1.0]hex-30-en-2-ol Derivative, photochemically generated building blocks for bicyclic β-lactams”
    Glarner, F.; Thornton, S. R.; Schärer, D.; Bernardinelli, G.; Burger, U.
    Helv. Chim. Acta 1997, 80, 121-127.

The title compounds 4 are obtained by photolysis of simple N-alkylpyridinium salts in H₂O or alcohol. On reaction with [Fe₂(CO)₉] in THF, 4gives bicyclic tricarbonyliron complexes 13a–d, which on oxidative decomplexation with ceric ammonium nitrate afford cis-fused cyclopenteno-β-lactams 15a–d.

DOI : 10.1002/hlca.19970800112 

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