Scheme 16. Reconstitution of Myoglobin (Mb) with Porphyrins and Analogues Affording Increased Activity and Selectivity in Fe-Catalyzed Cyclopropanation.
(a) Structure of heme and Fe-porphyrin 27 and reconstitution inside Mb. (b) Cyclopropanation of styrene with diazoacetate 28 and metallocarbene intermediate 29. (c) Selected results of Fasan’s stereoselective cyclopropanation catalyzed by 30·Mb and mutants thereof.