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A set of m‐terphenylenes having a readily functionalizable hydroxy group as well as either symmetric AA‐type or unsymmetric AB‐type halide termini have been prepared on a several‐gram scale. The synthesis was carried out on the basis of the Suzuki–Miyaura cross‐coupling in combination with a TMS masking strategy. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)

A new procedure for the resolution of DL‐proline, DL‐alanine and DL‐isoleucine into the optical antipodes is outlined. It is based on the separation of diastereoisomeric salts of D‐ or L‐tyrosine hydrazide with Z‐DL‐proline, Z‐DL‐alanine and Z‐DL‐isoleucine, by means of fractional crystallization in suitable solvents such as lower aliphatic alcohols and water. It is shown that the new method gives excellent yields even with half the molar amount of the optically active resolving agent.

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