The light touch: Asymmetric photoequilibrium and autocatalysis act as sources of homochirality in a highly enantioselective preparation of chiral alcohols (see scheme). This process is initiated by left- and right-circularly polarized light (CPL) and exploits the resulting photoequilibrium between chiral olefin substrates to yield 2-alkynyl-5-pyrimidyl alkanols.
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