Study 6.21 Asymmetric synthesis in crystals application of chiral auxiliaries

Case Study 6.21 Asymmetric synthesis in crystals - application of chiral auxiliaries 

Molecular motions in confining chiral crystal lattice media are known to be severely restricted. Therefore, high photoreaction selectivities in the solid state can be achieved (see also Special Topic 6.5).172,173 In the present case, it was shown that salts of achiral 

5 Carbonyl Compounds Photocyclization Following n, 1-Hydrogen Abstraction 

R1 = alkyl, aryl R2 = various groups X = various atoms n =1-6 

The cyclization of 1,4-biradicals formed by y-hydrogen abstraction is discussed in Section 6.3.4, which focuses on the Norrish type II elimination, the most common 

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