±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 906  |  »Ø¸´: 11
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£

º£Èôqi

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
Ôõô²»·¢½ð±Ò°¡£¬²»¸øÄãÎÄÏ×Á˰¡
°²ÐÄ×öÈË£¬ÈÏÕæ×öÊ£¡
11Â¥2010-01-12 16:55:28
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

º£Èôqi

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

²Å¸ø0.5¸ö½ð±Ò°¡
8-Cyclodextrin
(60.0 g, 52.9 mmol) was suspended in 500 mL of water, and NaOH (6.57
g,. 164.0 mmol) in 20 mL of water was added dropwise over 6 min. The
suspension became homogeneous and slightly yellow before the addition
was complete. p-Toluenesulfonyl chloride (10.08 g, 52.9 mmol) in 30 mL
of acetonitrile was added dropwise over 8 min, causing immediate formation
of a white precipitate. After 2 h of stirring at 23 OC the precipitate
was removed by suction filtration and the filtrate refrigerated
overnight at 4 ¡°C. The resulting white precipitate was recovered by
suction filtration and after drying for 12 h (0.005 mmHg) afforded 7.18
g of a pure white solid. A second crop gave 0.207 g which was indistinguishable
from the first in all respects.
°²ÐÄ×öÈË£¬ÈÏÕæ×öÊ£¡
12Â¥2010-01-12 16:56:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ baobaodog µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ÉúÎïѧ308·ÖÇóµ÷¼Á£¨Ò»Ö¾Ô¸»ª¶«Ê¦´ó£© +6 ÏàÐűػá¹ââÍòÕ 2026-03-31 7/350 2026-04-02 23:16 by JourneyLucky
[¿¼ÑÐ] 309·Ö085801Çóµ÷¼Á +10 ѧԱGtwj7W 2026-03-31 10/500 2026-04-02 22:42 by yunlongyang
[¿¼ÑÐ] 266Çóµ÷¼Á +12 ÑôÑôÍÛÈû 2026-03-27 13/650 2026-04-02 21:32 by zllcz
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¹¤Òµ´óѧ£¬324·ÖÇóµ÷¼Á +7 Áã°Ë# 2026-03-28 7/350 2026-04-02 21:09 by 1104338198
[¿¼ÑÐ] 070300»¯Ñ§Çóµ÷¼Á +8 Æð¸öÃûÕ¦ÕâôÄÑ 2026-03-27 9/450 2026-04-02 20:42 by dongzh2009
[¿¼ÑÐ] ²ÄÁÏ0856 Ó¢Ò»Êý¶þ 323 Çóµ÷¼Á +10 Ô¬sy 2026-04-01 10/500 2026-04-02 19:52 by xingsh
[¿¼ÑÐ] 0832ʳƷ¿ÆÑ§Ó빤³Ìѧ˶282µ÷¼Á +4 ÓãÔÚË®ÖÐÓÎa 2026-04-02 7/350 2026-04-02 14:12 by baoball
[¿¼ÑÐ] ²ÄÁÏ»¯¹¤340Çóµ÷¼Á +5 jhx777 2026-03-30 5/250 2026-04-02 12:45 by smileboy2006
[¿¼ÑÐ] Ò»Ö¾Ô¸ÏÃÃÅ´óѧ²ÄÁϹ¤³Ìר˶354ÕÒµ÷¼Á£¡£¡£¡ +7 ±´ß±µ±µ 2026-03-30 7/350 2026-04-02 12:19 by 1753564080
[¿¼ÑÐ] ¼ÆËã»ú265¿çµ÷»·¾³ +5 Yumeng_6 2026-03-27 5/250 2026-04-02 10:54 by guanxin1001
[¿¼ÑÐ] 270µ÷¼Á +7 maxjxbsk 2026-04-02 7/350 2026-04-02 09:50 by yulian1987
[¿¼ÑÐ] 291Çóµ÷¼Á +20 Y-cap 2026-03-29 25/1250 2026-04-01 23:49 by ÐÀϲ777
[¿¼ÑÐ] 11408 321·ÖÇóµ÷¼Á +3 huchun12138 2026-03-30 4/200 2026-04-01 22:48 by guanxin1001
[¿¼ÑÐ] 085601²ÄÁϹ¤³ÌÕÒµ÷¼Á +20 oatmealR 2026-03-29 21/1050 2026-04-01 21:00 by lijunpoly
[¿¼ÑÐ] ÎïÀíѧµ÷¼Á +4 СÑò36 2026-03-30 4/200 2026-03-31 16:16 by lishahe
[¿¼ÑÐ] 085601 329·Öµ÷¼Á +6 yzsa12 2026-03-31 6/300 2026-03-31 15:23 by yanflower7133
[¿¼ÑÐ] 297 µØÀíѧ070500 ¸´ÊÔÇóµ÷¼Á +3 СԲȦȦooo 2026-03-30 3/150 2026-03-30 21:05 by ÓàÕðyz
[¿¼ÑÐ] 343Çóµ÷¼Á +6 °®î¿°í 2026-03-29 6/300 2026-03-29 12:00 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 312£¬ÉúÎïѧÇóµ÷¼Á +3 СÒëͬѧabc 2026-03-28 3/150 2026-03-28 15:32 by ÂäÉ˼
[¿¼ÑÐ] 272Çóµ÷¼Á +7 ½Å»¬µÄÊØ·¨¹«Ãñ 2026-03-27 7/350 2026-03-27 17:23 by laoshidan
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û