The synthesis of a number of variously substituted N-alkyl 2-hydroxyaminoalkanols 3 and their reactions with phenylboronic acid are detailed. The crystalline products proved to be 1:2 condensates 4 in a few cases and 1:1 condensates 5 in all the other cases studied. Crystals of 2-mesityl-6,6-pentamethylene-1,3-dioxa-4-aza-2-boracyclohexane, 5l, are triclinic, a = 11.540(2), b = 10.402(3), c = 8.440(2) Å, α = 108.86(2)°, β = 97.62(2)°, γ = 89.36(2)°, Z = 2, space group [Formula: see text] and those of 4,4′-methylenebis(6,6-pentamethylene-2-phenyl-1,3-dioxa-4-aza-2-boracyclohexane) benzene solvate, 15a•C6H6, are monoclinic, a = 22.690(1), b = 16.867(1), c = 8.4783(9) Å, β = 104.912(8)°, Z = 4, space group C2/c. The structures were solved by direct methods and refined by full-matrix least-squares procedures to R = 0.037 and 0.035 (Rw = 0.035 and 0.044) for 3190 and 2084 reflections with I ≥ 3σ(F2)• respectively.
本文详细介绍了多种不同取代的N-烷基2-羟基氨基烷醇3的合成及其与苯硼酸的反应。在一些情况下,晶体产物被证明是1:2缩聚物4,而在所有其他研究案例中均为1:1缩聚物5。2-三甲基-6,6-戊二亚-1,3-二氧杂-4-氮杂-2-硼杂环己烷晶体5l为三斜晶系,a = 11.540(2) Å,b = 10.402(3) Å,c = 8.440(2) Å,α = 108.86(2)°,β = 97.62(2)°,γ = 89.36(2)°,Z = 2,空间群[Formula: see text]。4,4'-亚甲基双(6,6-戊二亚-2-苯基-1,3-二氧杂-4-氮杂-2-硼杂环己烷)苯溶剂15a•C6H6的晶体为单斜晶系,a = 22.690(1) Å,b = 16.867(1) Å,c = 8.4783(9) Å,β = 104.912(8)°,Z = 4,空间群C2/c。这些结构通过直接方法解决,并通过全矩阵最小二乘程序精化至R = 0.037和0.035(Rw = 0.035和0.044),分别对应3190和2084个反射,其中I ≥ 3σ(F2)•。