(2S)-2-hydroxy-2-(3-phenoxyphenyl)acetonitrile → (S)alpha-cyano-3-phenoxy-benzyl(1R,cis)2,2-dimethyl-3-[Z-2-(cyclohexyloxycarbonyl)-ethenyl]-cyclopropane-carboxylate

Beteiligte Stoffe

Reaktionsschritte

Using the procedure of Step D in Example 7, 2.5 g of the product of Step C and 2.2 g of (S)α-cyano-3-phenoxybenzyl alcohol were reacted and the product was chromatographed over silica gel. Elution with a 9-1 hexane-ether mixture yielded 1.883 g of (S)α-cyano-3-phenoxy-benzyl(1R,cis)2,2-dimethyl-3-[Z-2-(cyclohexyloxycarbonyl)-ethenyl]-cyclopropane-carboxylate with a specific rotation of [α]D20 =+41°±2.5° (c=0.5% in chloroform).

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