Syntheses and structures of dihydrocalix[4]arenes bearing O-benzonitrile and O-acetonyl substituents


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Abstract

Three 25,27-dihydrocalix[4]arene derivatives, bearing benzonitrile and acetone groups on the oxygens, were prepared and structurally characterized. All three structures crystallize in P, with cell dimensions: bis(benzonitrile)calix[4]arene·toluene, a = 11.530(2) Å, b = 12.013(2) Å, c = 14.089(4) Å, α = 103.555(18)°, β = 94.341(18)°, γ = 104.704(16)°, and V = 1815.9(7) Å3; anti-bis-acetone-calix[4]arene, a = 7.5847(8) Å, b = 12.0948(17) Å, c = 15.3375(16) Å, α = 78.982(10)°, β = 76.932(9)°, γ = 73.129(10)°, and V = 1299.6(3) Å3; syn-bis-acetone-calix[4]arene, a = 9.080(3) Å, b = 10.391(3) Å, c = 14.816(3) Å, α = 96.998(19)°, β = 100.02(2)°, γ = 103.93(3)°, and V = 1299.6(3) Å3.

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