²é¿´: 3316  |  »Ø¸´: 11
±¾Ìû²úÉú 1 ¸ö BM-EPI £¬µã»÷ÕâÀï½øÐв鿴

yuzaifei

гæ (СÓÐÃûÆø)

[ÇóÖú] ¹Èë׸ÊëÄÔÚ¶þ¼×ÑÇí¿Öл¹ÓжԶþÁò¼üµÄ»¹Ô­×÷ÓÃÂð?

»¹Ô­Ð͹Èë׸ÊëÄÔÚË®ÖÐÓжԶþÁò¼üµÄ»¹Ô­×÷Óã¬ÎÒÏÖÔÚÏë°ÑÕâ¸ö»¹Ô­·´Ó¦×ªÒƵ½¶þ¼×ÑÇí¿ÌåϵÖУ¬²»ÏþµÃ»¹Äܲ»ÄÜ·¢»ÓÕâÖÖ×÷Óã¬ÌØÀ´Çë½Ì£¡
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ѧÎÞÖ¹¾³
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

aircraftvip

ר¼Ò¹ËÎÊ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ºìÖÛÁ÷ÐÇ: ½ð±Ò+1, ר¼Ò¿¼ºË, ¸Ðл½»Á÷»ØÌû£¬µ«ÊǶþ¡¢ÈýÂ¥ÄãÁ½Ë­¶ÔË­´íÎҾͲ»ÖªµÀÁË 2012-08-27 20:33:49
yuzaifei: ½ð±Ò+2, ¡ïÓаïÖú, лл²ÎÓë 2012-08-28 22:15:08
The best way is to make a model reaction.
Of course make the reaction using DMSO-D6 as solvent in a NMR tube.
¸ñÎïÖÂÖª£¬ÖªÐкÏÒ»
2Â¥2012-08-27 16:24:31
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

liuanan

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ºìÖÛÁ÷ÐÇ: ½ð±Ò+1, ר¼Ò¿¼ºË, ¸Ðл½»Á÷»ØÌû£¬µ«ÊǶþ¡¢ÈýÂ¥ÄãÁ½Ë­¶ÔË­´íÎҾͲ»ÖªµÀÁË 2012-08-27 20:34:00
yuzaifei: ½ð±Ò+2, ¡ïÓаïÖú, лл£¬Ò²ÌṩÁËÒ»ÖÖ¿ÉÄÜÐÔ 2012-08-28 22:15:36
ÎÒ¾õµÃ²»ÐУ¬ÎҼǵÃDMSO¶ÔÛÏ»ùÓÐÑõ»¯×÷Ó㬹Èë׸ÊëļÓÈëÖ®ºó×Ô¼º¾Í»á±»Ñõ»¯Éú³É¶þÁò¼üÁ˰É
3Â¥2012-08-27 16:42:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

aircraftvip

ר¼Ò¹ËÎÊ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
ºìÖÛÁ÷ÐÇ: ½ð±Ò+1, Ó¦ÖúÖ¸Êý+1, ר¼Ò¿¼ºË, ˵ûÓÐÏÔÖøÑõ»¯£¬µ«ÊÇDMSO¶ÔÓÚÑõ»¯Ô­ÀíÓÖÊÇʲô£¿@liuanan 2012-08-28 09:23:26
yuzaifei: ½ð±Ò+4, Èç´ËѧÊõ£¬ËäÈ»²»ÊǺÜÓÐÓã¬Ò²¹ÄÀøÒ»Ï 2012-08-28 22:16:05
ÒýÓûØÌû:
3Â¥: Originally posted by liuanan at 2012-08-27 16:42:44
ÎÒ¾õµÃ²»ÐУ¬ÎҼǵÃDMSO¶ÔÛÏ»ùÓÐÑõ»¯×÷Ó㬹Èë׸ÊëļÓÈëÖ®ºó×Ô¼º¾Í»á±»Ñõ»¯Éú³É¶þÁò¼üÁ˰É

One original paper was J. Org. Chem., 41(11), 2061 - 2064 (1976).

It says the oxidation process worked in the presence small amount of bromine or Hydrogen bromide as catalyst, at high temperature as 180¡ãC, in the presence of water.

"Further, Lipton and Bodwel14 have reported that cystine is oxidized to cysteic  acid  by  minor  amounts  of  MezSO  under  conditions
used for the acid-catalyzed hydrolysis of proteins."

I still think the best way is to make a conclusion after practical evidence. Since nobody could tell whether the oxidation would be significant if some of the conditions (temperature, pH, catalyst...) were changed.
¸ñÎïÖÂÖª£¬ÖªÐкÏÒ»
4Â¥2012-08-28 03:09:43
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

aircraftvip

ר¼Ò¹ËÎÊ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
markar: ½ð±Ò+1, ¸Ðл»ØÌû½»Á÷ 2012-08-28 15:33:44
yuzaifei: ½ð±Ò+4, ¡ïÓаïÖú, ÔÞѧÊõ£¬¸ÐлÄúµÄÈÏÕæ½²½â 2012-08-28 22:16:42
ÒýÓûØÌû:
4Â¥: Originally posted by aircraftvip at 2012-08-28 03:09:43
One original paper was J. Org. Chem., 41(11), 2061 - 2064 (1976).

It says the oxidation process worked in the presence small amount of bromine or Hydrogen bromide as catalyst, at high temperature ...

mechanism of Swern Oxidation---Wikipedia

The first step of the Swern oxidation is the low-temperature reaction of dimethyl sulfoxide (DMSO), 1a, formally as resonance contributor 1b, with oxalyl chloride, 2. The first intermediate, 3, quickly decomposes giving off CO2 and CO and producing dimethylchlorosulfonium chloride, 4.



After addition of the alcohol 5, the dimethylchlorosulfonium chloride 4 reacts with the alcohol to give the key alkoxysulfonium ion intermediate, 6. The addition of at least 2 equivalents of base ¡ª typically triethylamine ¡ª will deprotonate the alkoxysulfonium ion to give the sulfur ylide 7. In a five-membered ring transition state, the sulfur ylide 7 decomposes to give dimethyl sulfide and the desired ketone (or aldehyde) 8.

¸ñÎïÖÂÖª£¬ÖªÐкÏÒ»
5Â¥2012-08-28 14:02:12
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

liuanan

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
markar: ½ð±Ò+1, ¸Ðл»ØÌû½»Á÷ 2012-08-28 15:33:57
yuzaifei: ½ð±Ò+6, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл£¬ÎÒ×Ðϸ¿´Ò»ÏÂÎÄÏ× 2012-08-28 22:17:58
2012 J Mater Chem
ÌâÄ¿£ºBiological stimuli responsive drug carriers based on keratin for triggerable drug delivery
ËùÔÚ²¿·Ö£º
2.3. Preparation of core-crosslinked keratin-g-PEG
nanoparticles and DOX-loaded nanoparticles
ÎÄ×Ö±íÊö£ºThe crosslinking procedure proceeded for 24 h at 45 C with DMSO (10%, v/v) as the oxidant.
DMSOÑõ»¯»úÀíÎÒÒ²²»Á˽⣬ǰÁ½ÌìÕýºÃ¿´µ½Õâ¸ö¶«Î÷£¬Ò²ÊǵÚÒ»´ÎÖªµÀDMSO¶ÔÛÏ»ùÓÐÑõ»¯×÷Ó㬸øÂ¥Ö÷Ò»¸ö²Î¿¼¡£
6Â¥2012-08-28 15:05:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

liuanan

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

ÒýÓûØÌû:
5Â¥: Originally posted by aircraftvip at 2012-08-28 14:02:12
mechanism of Swern Oxidation---Wikipedia
42/e8/1007878_1346133668_763.png
The first step of the Swern oxidation is the low-temperature reaction of dimethyl sulfoxide (DMSO), 1a, formally as resonanc ...

´ó¸ç£¬Õâ¸ö·´Ó¦»úÀíÊǹØÓÚDMSOÈçºÎÑõ»¯´¼µÄ°É£¿±»DMSOÑõ»¯µÄÎïÖÊ5ÊÇÒ»¸ö´¼°¡£¬Â¥Ö÷ÏëÖªµÀµÄÊǶþÁò¼ü°¡£¬²»Ò»ÑùµÄ°¡
7Â¥2012-08-28 15:11:13
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

aircraftvip

ר¼Ò¹ËÎÊ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
yuzaifei: ½ð±Ò+10, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ºÜ¸Ð¼¤£¡ÎÒ×Ðϸ¿´Ò»Ï 2012-08-28 22:20:07
ºìÖÛÁ÷ÐÇ: ½ð±Ò+1, »¶Ó­À´µ½ÉúÎ﹦ÄܲÄÁϰå¿éÓ¦Öú½»Á÷ 2012-08-28 23:05:05
markar: ½ð±Ò+5, BM-EPI+1, ר¼Ò½²µÃºÜ͸³¹°¡£¬¹ÄÀøÒ»Ï£¡ 2012-08-29 08:38:01
ÒýÓûØÌû:
7Â¥: Originally posted by liuanan at 2012-08-28 15:11:13
´ó¸ç£¬Õâ¸ö·´Ó¦»úÀíÊǹØÓÚDMSOÈçºÎÑõ»¯´¼µÄ°É£¿±»DMSOÑõ»¯µÄÎïÖÊ5ÊÇÒ»¸ö´¼°¡£¬Â¥Ö÷ÏëÖªµÀµÄÊǶþÁò¼ü°¡£¬²»Ò»ÑùµÄ°¡...

Äã¸øµÄÎÄÏײ¢Ã»ÓÐ˵Ã÷Ô­Òò£¬Ô­ÎÄÊÇ
Disulfide Bond Formation in Peptides by  Dimethyl Sulfoxide.  Scope and Applications
J. Am. Chem. SOC. 1991, 113,6657-6662

»¹ÊÇÇëÂ¥Ö÷×Ô¼º¶¨¶á°É
¹þ¹þ

untitled.JPG

¸ñÎïÖÂÖª£¬ÖªÐкÏÒ»
8Â¥2012-08-28 16:21:10
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

yuzaifei

гæ (СÓÐÃûÆø)

ÎÒ±¾À´ÊÇÏëÔÚ´¿DMSOÖÐ×öGSH»¹Ô­¶þÁò¼üµÄÒ»¸ö·´Ó¦£¬½ñÌìÊÔÁËһϣ¬·¢ÏÖGSHÔÚDMSOÖв»ÈÜ»òÕßÈܽâÐԺܲËùÒÔÎÒÔÚ¿¼ÂÇÕâ¸ö·´Ó¦µÄ¿ÉÐÐÐÔ£¬Ð»Ð»¸÷λ³æÓѵÄÈÈÇé²ÎÓ룡
ѧÎÞÖ¹¾³
9Â¥2012-08-28 22:22:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
10Â¥2017-04-03 16:29:31
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ yuzaifei µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼Á +3 Mqqqqqq 2026-03-19 3/150 2026-03-19 14:11 by peike
[¿¼ÑÐ] Ò»Ö¾Ô¸Äϲý´óѧ£¬327·Ö£¬²ÄÁÏÓ뻯¹¤085600 +3 Ncdx123456 2026-03-19 3/150 2026-03-19 13:18 by houyaoxu
[¿¼ÑÐ] Ò»Ö¾Ô¸¼ªÁÖ´óѧ²ÄÁÏѧ˶321Çóµ÷¼Á +6 Ymlll 2026-03-18 9/450 2026-03-19 10:28 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] ±¾¿ÆÖ£ÖÝ´óѧÎïÀíѧԺ£¬Ò»Ö¾Ô¸»ª¿Æ070200ѧ˶£¬346Çóµ÷¼Á +4 ÎÒ²»ÊÇÒ»¸ù´Ð 2026-03-18 4/200 2026-03-19 09:11 by ¸¡ÔÆ166
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á +3 ÄÝÄÝninicgb 2026-03-17 3/150 2026-03-18 10:29 by macy2011
[¿¼ÑÐ] 268Çóµ÷¼Á +6 ¼òµ¥µã0 2026-03-17 6/300 2026-03-18 09:04 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 334Çóµ÷¼Á +3 Ö¾´æ¸ßÔ¶ÒâÔÚ»úÐ 2026-03-16 3/150 2026-03-18 08:34 by lm4875102
[¿¼ÑÐ] ²ÄÁϹ¤³Ìר˶274Ò»Ö¾Ô¸211Çóµ÷¼Á +6 Ñ¦ÔÆÅô 2026-03-15 6/300 2026-03-17 11:05 by ѧԱh26Tkc
[¿¼ÑÐ] ¿¼Ñе÷¼Á +3 ä¿ya_~ 2026-03-17 5/250 2026-03-17 09:25 by Winj1e
[¿¼ÑÐ] 274Çóµ÷¼Á +5 ʱ¼äµã 2026-03-13 5/250 2026-03-17 07:34 by ÈÈÇéɳĮ
[¿¼ÑÐ] 11408 Ò»Ö¾Ô¸Î÷µç£¬277·ÖÇóµ÷¼Á +3 zhouzhen654 2026-03-16 3/150 2026-03-17 07:03 by laoshidan
[¿¼ÑÐ] »úеר˶325£¬Ñ°ÕÒµ÷¼ÁԺУ +3 y9999 2026-03-15 5/250 2026-03-16 19:58 by y9999
[¿¼ÑÐ] 326Çóµ÷¼Á +4 ŵ±´¶û»¯Ñ§½±êéê 2026-03-15 7/350 2026-03-16 17:11 by ŵ±´¶û»¯Ñ§½±êéê
[»ù½ðÉêÇë] ½ñÄêµÄ¹ú»ù½ðÊÇ´ò·ÖÖÆÂ𣿠50+3 zhanghaozhu 2026-03-14 3/150 2026-03-16 17:07 by ±±¾©À³ÒðÈóÉ«
[¿¼ÑÐ] 304Çóµ÷¼Á +5 ËØÄê¼ÀÓï 2026-03-15 5/250 2026-03-16 17:00 by ÎҵĴ¬Îҵĺ£
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤ Çóµ÷¼Á +13 enenenhui 2026-03-13 14/700 2026-03-16 15:19 by ÁËÁËÁËÁË¡£¡£
[¿¼ÑÐ] 0856Çóµ÷¼Á +3 ÁõÃÎ΢ 2026-03-15 3/150 2026-03-16 10:00 by houyaoxu
[¿¼ÑÐ] 26¿¼ÑÐÒ»Ö¾Ô¸ÖйúʯÓÍ´óѧ(»ª¶«)305·ÖÇóµ÷¼Á +3 ¼ÎÄêÐÂ³Ì 2026-03-15 3/150 2026-03-15 13:58 by ¹þ¹þ¹þ¹þºÙºÙºÙ
[¿¼ÑÐ] 080500£¬²ÄÁÏѧ˶302·ÖÇóµ÷¼ÁѧУ +4 ³õʶ¿ÉÀÖ 2026-03-14 5/250 2026-03-14 21:08 by peike
[¿¼ÑÐ] ÕÐÊÕ0805£¨²ÄÁÏ£©µ÷¼Á +3 18595523086 2026-03-13 3/150 2026-03-14 00:33 by 123%¡¢
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û