New Alkali Metal Boratabenzenes: Structures of K([18]‐Crown‐6)(C
<sub>5</sub>
H
<sub>5</sub>
BMe), of the Tetrahydropyran Solvate K(3,5‐Me
<sub>2</sub>
C
<sub>5</sub>
H
<sub>3</sub>
B−NMe
<sub>2</sub>
)(THP)
<sub>2</sub>
, and of Two THF Solvates of K[3,5‐Me
<sub>2</sub>
C
<sub>5</sub>
H
<sub>3</sub>
B−N(SiMe
<sub>3</sub>
)
<sub>2</sub>
]
作者:Xiaolai Zheng、Gerhard E. Herberich
DOI:10.1002/ejic.200300040
日期:2003.6
6-tetrahydroborinine (9) with MN(SiMe3)2 (M = Na, K) in toluene afforded the unsolvated salts M(3,5-Me2C5H3B−NMe2) (M = Na: 11; M = K: 12). Morpholino derivatives M(3,5-Me2C5H3B−NC4H8O) (M = Li: 17; M = Na: 18) and the potassium salt K[3,5-Me2C5H3B−N(SiMe3)2] (19) were obtained similarly. The unsolvated salts are highly air- and water-sensitive, colorless powders. Crystallization with the help of auxiliary Lewis
钾盐K(C5H5BMe)(8)可以从甲苯中的2-(Me3Sn)C5H5BMe(7)/KOtBu以基本上定量的产率获得。1-(二甲氨基)-3-亚甲基-1,2,3,6-四氢硼烷 (9) 与 MN(SiMe3)2 (M = Na, K) 在甲苯中的金属化得到未溶剂化的盐 M(3,5-Me2C5H3B -NMe2) (M = Na: 11; M = K: 12)。类似地获得吗啉衍生物 M(3,5-Me2C5H3B-NC4H8O) (M = Li: 17; M = Na: 18) 和钾盐 K[3,5-Me2C5H3B-N(SiMe3)2] (19)。非溶剂化盐是对空气和水高度敏感的无色粉末。在辅助路易斯碱的帮助下结晶提供了结晶溶剂化物 K([18]-crown-6)(C5H5BMe) (20)、K(THP)2(3,5-Me2C5H3B-NMe2) (21) 和伴随的假多晶型物K[3,5-Me2C5H