申请人:Wu Baihua
公开号:US20050085645A1
公开(公告)日:2005-04-21
An O-substituted hydroxylamine having the following general formula:
R
1
—CHX—O—NH
2
wherein X is hydrogen or an alkyl; and R
1
is an unsubstituted or substituted phenyl, thienyl, furanyl, pyrrolyl or —CR
2
═CR
3
R
4
; wherein R
2
, R
3
and R
4
are hydrogen, halogen or alkyl. The O-substituted hydroxylamine exhibits at least one property selected from the group consisting of: essentially free of hydroxylamine; essentially free of any solvent; a water content of between about 0% to 90% by weight; and a high strength (as measured by mole of the O-substituted hydroxylamine per gram of sample) of between about 0.5 to 3.3-fold as much as a 40% O-substituted hydroxylamine salt solution, by weight. The O-substituted hydroxylamine further comprising at least one additional property selected from the group consisting of: a purity of between about 98% to 100%, based on gas chromatographic area; and a purity drop of less than about 1.2% after 78 days at 40° C. when the O-substituted hydroxylamine has a concentration of about 85% in water, based on gas chromatographic area. The O-substituted hydroxylamine is at least one isomer selected from the group consisting of cis, trans and a mixture thereof. The O-substituted hydroxylamine may also be reacidified to an O-substituted hydroxylamine salt free of hydroxylamine.
具有以下一般式的O-取代羟胺:R1—CHX—O—NH2其中X为氢或烷基;而R1是未取代或取代的苯基、噻吩基、呋喃基、吡咯基或—CR2═CR3R4;其中R2、R3和R4为氢、卤素或烷基。该O-取代羟胺具有以下所选特性中的至少一种:基本不含羟胺;基本不含任何溶剂;水含量约为0%至90%的重量;以及高强度(按照摩尔的O-取代羟胺每克样品的比例)约为40% O-取代羟胺盐溶液的0.5至3.3倍的重量。该O-取代羟胺还包括以下所选特性中的至少一种:根据气相色谱面积约为98%至100%的纯度;以及当O-取代羟胺在水中浓度约为85%时,在40°C下经过78天后的纯度下降不超过约1.2%,根据气相色谱面积。该O-取代羟胺是所选自顺式、反式和它们的混合物中的至少一种异构体。该O-取代羟胺也可以重新酸化为不含羟胺的O-取代羟胺盐。