| 查看: 466 | 回复: 6 | |||
| 当前主题已经存档。 | |||
czjdingyi木虫 (正式写手)
|
[交流]
【求助】检索[2.2]Paracyclophane的合成方法
|
||
|
请大伙帮忙找找[2.2]Paracyclophane的合成方法，Sciencefinder，CA， Beilstein,都行。请将应助结果上传网盘分享。 谢谢了！ [ Last edited by heavence007 on 2009-12-11 at 16:23 ] |
回复此楼» 猜你喜欢
生物医学材料前沿科普：低密度、高孔隙率的“多孔微球”核心技术与应用全景
已经有1人回复
-
湖南工业大学周贵寅组招生物医学工程（学硕07、08都行）、生物与医药（专硕08）硕士生
已经有0人回复
-
有机高分子材料论文润色/翻译怎么收费?
已经有268人回复
-
湖南工业大学周贵寅组招生物医学工程（学硕07、08都行）和生物与医药（专硕08）硕士生
已经有0人回复
-
考研求调剂
已经有0人回复
-
2026年中南民族大学化学与材料科学学院调剂公告
已经有40人回复
-
武汉纺织大学招生物材料、化学、高分子相关专业硕士生
已经有0人回复
-
武汉纺织大学招生物材料、化学、高分子相关专业硕士生-另有少量士兵计划可咨询
已经有0人回复
-
[武汉纺织大学]材料学院[姜伟团队名称]课题组-2026年硕士研究生调剂信息
已经有0人回复
-
中国科学院·过程工程研究所·招聘海内外高层次人才---过程所“百人计划”
已经有0人回复
-
中国科学院·过程工程研究所·招聘海内外高层次人才---过程所“百人计划”
已经有3人回复
帮你顶顶~ 2楼2009-12-11 16:26:50
闻筝雪舞
至尊木虫 (文坛精英)
- 应助: 5 (幼儿园)
- 贵宾: 0.308
- 金币: 4199.4
- 散金: 1615
- 红花: 14
- 沙发: 37
- 帖子: 13193
- 在线: 421小时
- 虫号: 687221
- 注册: 2009-01-04
- 性别: MM
- 专业: 昆虫学
3楼2009-12-11 17:10:34
wwjjdd
木虫之王 (文坛精英)
- 应助: 0 (幼儿园)
- 贵宾: 2.104
- 金币: 114753
- 散金: 110
- 红花: 64
- 帖子: 36407
- 在线: 2371.3小时
- 虫号: 169161
- 注册: 2006-01-16
- 性别: GG
- 专业: 合成药物化学
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
czjdingyi(金币+43,VIP+0):Thank you very much! 12-12 11:42
chemistryer(金币+1,VIP+0):鼓励交流 12-13 20:46
czjdingyi(金币+43,VIP+0):Thank you very much! 12-12 11:42
chemistryer(金币+1,VIP+0):鼓励交流 12-13 20:46
|
比较可行的路线 (i) H2O, ion-exchange resin Synthetic Communications, 1976 , vol. 6, p. 591 - 596 Full Text With sodium hydroxide Show Experimental Procedure Montedison S.p.A. Patent: US4675462 , 1987 Title/Abstract Full Text EXAMPLE 1 (Comparative Test) Into a 1,000 ml flask equipped with a stirrer, a thermometer and a condenser, there were charged: 100 g of an aqueous solution containing 40percent by weight of NaOH (1 mole), and 62.5 g of an aqueous solution at 63.9percent by weight of p-methylbenzyltrimethylammonium chloride (0.2 moles). Under continuous stirring, the solution was heated by gradually raising the temperature from 22.deg. C. to 120.deg. C. The NaOH concentration was maintained at 35percent by weight. The solution was maintained at the boiling temperature for 5 hours. The resulting (2,2)-paracyclophane was separated from the reaction mass by solubilization in 300 ml of xylene. To this purpose, xylene was added to the reaction mass and the slurry was maintained at total reflux under stirring for 0.5 hour. It was filtered at 95.deg. C., the aqueous phase was separated from the organic solution which was repeatedly washed with water and concentrated to small volume. With sodium hydroxide Show Experimental Procedure Montedison S.p.A. Patent: US4795838 , 1989 Title/Abstract Full Text With iodized misch metal in tetrahydrofuran 1 h; Ambient temperature other metals investigated; Product distribution; Takahashi, Senji; Mori, Nobuo Chemistry Letters, 1989 , p. 13 - 14 Title/Abstract Full Text 22.2% With iodized misch metal in tetrahydrofuran 1 h; Ambient temperature; Takahashi, Senji; Mori, Nobuo Chemistry Letters, 1989 , p. 13 - 14 Title/Abstract Full Text Multi-step reaction with 2 steps 1: 73 percent / NaBH4 / ethanol; tetrahydrofuran / 20 h / 40 °C 2: 1.) isoamyl nitrite, anthranilic acid, 2.) Raney Ni, H2 / 1.) 1,2-dichloroethane, reflux, 4h, 2.) ethanol, reflux, 17-23 h View Scheme Higuchi, Hiroyuki; Misumi, Soichi Tetrahedron Letters, 1982 , vol. 23, # 52 p. 5571 - 5574 Title/Abstract Full Text View citing articles Chow, Hak-Fun; Low, Kam-Hung; Wong, King Y. Synlett, 2005 , # 14 p. 2130 - 2134 Trahanovsky, Walter S.; Lorimor, Steven P. Journal of Organic Chemistry, 2006 , vol. 71, # 5 p. 1784 - 1794 |
4楼2009-12-12 10:43:28
wwjjdd
木虫之王 (文坛精英)
- 应助: 0 (幼儿园)
- 贵宾: 2.104
- 金币: 114753
- 散金: 110
- 红花: 64
- 帖子: 36407
- 在线: 2371.3小时
- 虫号: 169161
- 注册: 2006-01-16
- 性别: GG
- 专业: 合成药物化学
★
chemistryer(金币+1,VIP+0):鼓励交流 12-13 20:47
chemistryer(金币+1,VIP+0):鼓励交流 12-13 20:47
5楼2009-12-12 10:51:21
wwjjdd
木虫之王 (文坛精英)
- 应助: 0 (幼儿园)
- 贵宾: 2.104
- 金币: 114753
- 散金: 110
- 红花: 64
- 帖子: 36407
- 在线: 2371.3小时
- 虫号: 169161
- 注册: 2006-01-16
- 性别: GG
- 专业: 合成药物化学
6楼2009-12-12 11:44:50
hunhun3887
铁杆木虫 (正式写手)
平民国王
- 应助: 15 (小学生)
- 贵宾: 0.049
- 金币: 6898
- 散金: 914
- 红花: 69
- 帖子: 882
- 在线: 127.8小时
- 虫号: 628699
- 注册: 2008-10-17
- 性别: GG
- 专业: 化工系统工程
7楼2009-12-14 22:10:03
