申请人:YAMADA Shuhei
公开号:US20090005584A1
公开(公告)日:2009-01-01
Disclosed are first to sixth processes for respectively producing hafnium tetra-tertiary-butoxide, tetrakis(acetylacetonato)hafnium, tetrakis(1-methoxy-2-methyl-2-propanolato)hafnium, hafnium tetra-tertiary-amyloxide, tetrakis(3-methyl-3-pentoxy)hafnium, and tetrakis(hexafluoroacetylacetonato)hafnium. The first process includes the steps of (a) adding a compound A(O
y
XO
n
Rf)
m
(e.g., CF
3
SO
3
H) to a crude hafnium amide Hf[N(R
1
)(R
2
)]
4
; (b) subjecting a product of the step (a) to a distillation under reduced pressure; (c) adding a lithium alkylamide Li(NR
3
R
4
) to a fraction obtained by the step (b); (d) subjecting a product of the step (c) to a distillation under reduced pressure; (e) adding tertiary butanol to a fraction obtained by the step (d); and (f) subjecting a product of the step (e) to a distillation under reduced pressure. The tertiary butanol of the step (e) is replaced with acetylacetone, 1-methoxy-2-methyl-2-propanol, tertiary amyl alcohol, 3-methyl-3-pentanol, and hexafluoroacetylacetone in the second to six processes, respectively.
揭示了分别用于生产四叔丁氧基铪、乙酰丙酮酸四铪、1-甲氧基-2-甲基-2-丙醇酸四铪、四叔戊氧基铪、3-甲基-3-戊氧基铪和六氟代乙酰丙酮酸四铪的第一至第六个工艺过程。第一工艺包括以下步骤:(a)将化合物A(OyXOnRf)m(例如CF3SO3H)加入粗铪酰胺Hf[N(R1)(R2)]4中;(b)将步骤(a)的产物在减压下蒸馏;(c)将步骤(b)得到的分馏物中加入锂烷胺Li(NR3R4);(d)将步骤(c)的产物在减压下蒸馏;(e)将叔丁醇加入步骤(d)得到的分馏物;(f)将步骤(e)的产物在减压下蒸馏。第二至第六个工艺中,步骤(e)的叔丁醇分别替换为乙酰丙酮、1-甲氧基-2-甲基-2-丙醇、叔戊醇、3-甲基-3-戊醇和六氟代乙酰丙酮。