公开(公告)号：US4052218A

公开(公告)日：1977-10-04

申请号：US579119

申请日：1975-05-19

申请人： Andre Samat ,  Robert Guglielmetti ,  Jacques Metzger

发明人： Andre Samat ,  Robert Guglielmetti ,  Jacques Metzger

IPC分类号： B41M5/28 ,  C07D277/64 ,  C07D513/10 ,  G03C1/02

CPC分类号： C07D513/10 ,  B41M5/284 ,  C07D277/64

摘要： The invention relates to novel thermochromic spiro heterocyclic compounds having one or the other of the following formulae: ##STR1## where R.sub.1 denotes hydrogen atoms or one or more electron-donor groups in positions 5, 6, 7 and 8 in formula (1); R.sub.i ' denotes hydrogen atoms or one or more electron-donor or electron-acceptor groups in positions 4', 5', 6' and 7' and 4", 5", 6" and 7" in formulae (1) and (2); and R.sub.j denotes hydrogen atoms or one or more electron-donor groups in positions 5, 6, 7, 8, 9 and 10 in formula (2). Use in thermographic recording material.

公开(公告)号：US3965158A

公开(公告)日：1976-06-22

申请号：US428828

申请日：1973-12-27

申请人： Gerard Soula ,  Jacques Metzger ,  Louis Lena

发明人： Gerard Soula ,  Jacques Metzger ,  Louis Lena

IPC分类号： C07C37/00 ,  C07C27/00 ,  C07C39/24 ,  C07C39/27 ,  C07C67/00 ,  C07C301/00 ,  C07C303/32 ,  C07C309/41 ,  C07C309/42 ,  C07C143/42

CPC分类号： C07C39/27 ,  C07C309/00

摘要： Process for the selective ortho substitution of a halobenzene sulfonic acid compound with a hydroxyl group or a group convertible to same to prepare the corresponding halophenol sulfonic acid compound which process comprises reacting a halobenzene sulfonic acid compound having at least two halogen atoms at least one of which is ortho to the sulfonic group with an alkali metal hydroxide or other hydroxy containing compound which is capable of replacing a nuclear halogen atom with a hydroxyl group, said reaction being conducted in the presence of a liquid organic reaction medium which is responsible for the orientation of the hydroxyl substitution in the ortho position. The halophenol sulfonates thus prepared optionally may be desulfonated to obtain the ortho hydroxy halobenzene compound.

摘要翻译： 选择性邻位取代具有羟基的卤代苯磺酸化合物或可转化为其的基团的方法，以制备相应的卤代酚磺酸化合物，该方法包括使至少一种具有至少两个卤素原子的卤代苯磺酸化合物 是具有碱金属氢氧化物或其它羟基化合物的磺酸基的邻位，其能够用羟基代替核卤素原子，所述反应在负责取向的液体有机反应介质的存在下进行 在邻位羟基取代。 任选地可以将由此制备的卤代酚磺酸盐脱磺化以获得邻羟基卤代苯化合物。