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. 2019 Dec 31;11(8):2243–2259. doi: 10.1039/c9sc05432d

Table 5. Intermolecular cyclopropanation reactions between other diazo compounds and styrene catalyzed by 1a a .

Inline graphic
Entry Diazo compound Yield of cyclopropane b (dr) By-product Recovery of 1a
1 graphic file with name c9sc05432d-u3.jpg 71% (2.4 : 1) 90%
2 c graphic file with name c9sc05432d-u4.jpg 45% (2.0 : 1) Azine 88%
3 d graphic file with name c9sc05432d-u5.jpg 0% graphic file with name c9sc05432d-u6.jpg 81%

aSee the ESI for detailed reaction conditions.

bYield and diastereomeric ratio (dr) determined by 1H NMR with PhTMS as the internal standard.

c In situ generated diazo compound from acetophenone hydrazone and Ag2O.

d In situ generated diazo compound from 2-adamantanone hydrazone and PhIO.