Clw@terizclon of tL*Mi. ,1cid in Di&tu',t Pho@dicd Dotuge Fw.d tn ...
Clw@terizclon of tL*Mi. ,1cid in Di&tu',t Pho@dicd Dotuge Fw.d tn ...
Clw@terizclon of tL*Mi. ,1cid in Di&tu',t Pho@dicd Dotuge Fw.d tn ...
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cciiriz<strong>in</strong>e, Ch&&lensd€ broad p.alc <strong>in</strong> lhe rege <strong>of</strong> 2500-3500 ed 2920 cm' due io<br />
hydrcgen bond<strong>in</strong>g dd hydroxyl slr.lchiq diepFed whfta cdrtonyl peal sh<strong>in</strong>ed lion<br />
| 698 lo 1654 cn-' wit! dim<strong>in</strong>bhcd <strong>in</strong>lensity.<br />
Conplex fomed betw@n cdirizile dd ncloxicd shosed quar€mary liitogd atom<br />
stFlch<strong>in</strong>g at 3070 cm I md NH d<strong>in</strong>tu <strong>of</strong> M<strong>in</strong>o eid <strong>in</strong> rh. r€gion <strong>of</strong> 2700-2400 cb_l<br />
coDplelely di$ppc&rd with EslEt ro dntiDa Cb@Ldnic F.rs <strong>of</strong>mdoxi@ d 1620<br />
dd 3292 m-r foi C{ ed s@lda.y ,NH or -OH strsrchirg disllFir€d whil., otho ers<br />
In tlE conplex <strong>of</strong> mefe@ic &id NH d<strong>in</strong>d <strong>of</strong> uilo &id ed lhe quateddy niEosetr atom<br />
sftLhitrg nom 270G2400 m-' and 3070 ro 3040 d ' dieppdr€d. Sh<strong>in</strong><strong>in</strong>A <strong>of</strong> somc<br />
meswd peek werc obsNcd wilh r€sp.d ro m€feMic acid, p€.Is <strong>of</strong> neu<strong>tn</strong>liad<br />
.ntiiy oI0!e wboxylic acid shiftcd liom 16l0-1554.5ed 1409.9-1292.2 cn-rlo 1654-158t<br />
IR 3pefu <strong>of</strong> elnizirc-ibuF<strong>of</strong>@ prcved th|t th. quar.nary litroga arom stFtch<strong>in</strong>g ard<br />
NH d<strong>in</strong>er <strong>of</strong> m<strong>in</strong>o rcid f@m 2?00-2400 cnir md 3070J040 cm I conpleicly dhappearcd.<br />
Srong absorption beds drc lo wboxyl grcu! shii€d fion l70E !o 1768.90 cn r,<br />
IR sFn.rdn <strong>of</strong> eti.iz<strong>in</strong>e*imlardid @mpl.x pmv€d that rhe qurtury ntuogd atom<br />
$elchiry nd NH dimr <strong>of</strong> mi@ &id at -30?O cE ' ed 270G2400 cn I rclF€rively,<br />
dhdppedd sill] Espar to @tiriz<strong>in</strong>€- Ch{erqblic Fab <strong>of</strong> l&1ore C-O-C arr.tch<strong>in</strong>g <strong>of</strong><br />
3iFvasladn sh<strong>in</strong>cd froo 1267 srd 1225 qr ro l24l cn'. Sihil&ly fiftire <strong>of</strong> 6r€r C=O<br />
ard csrcr {4C sterch<strong>in</strong>s toil Tot ad | 166 chr !o 1728 6d I135 mr !p?.dtd. orhq<br />
s4! <strong>of</strong> siCnals we sme.<br />
'It. rU NMR sFcoa <strong>of</strong> eririz<strong>in</strong>e @.6ned th. abov€ Gulls. The srgrrh <strong>of</strong> c€<strong>tn</strong>iz<strong>in</strong>e<br />
sholEd a s<strong>in</strong>gl.i ai d 2,8 dd at 4,09 ppn deliSraddg tsr poto6 for lhe CH, attached ro N<br />
iD the NCHTCH,O grelp ed t$! polo6 <strong>of</strong> the CH, adjeelt ro lhe ceboxylic acid,<br />
$perivel, Th. Dirog.n prclon <strong>in</strong> pipepjn w6 obtrn€d .t , 121 3.47 ppd. A rripLl<br />
B ob6n€d a1 d 3.65 3.86 pPn for i& pdro6 i! 6e CH, nd ilE O <strong>in</strong> CHrCIlrO. ItE<br />
pdlon <strong>of</strong>lhe CH <strong>in</strong> lhe n€thyl diphdyl ercup showed a bro.d si.gld ol d 4.6 ppm. fte<br />
nultiplel ar d ?.1 ?.6 ppD @ drc to nile prctoB <strong>of</strong> the enatic.i!es ard.t d 10,8 ppd a<br />
el bbad s<strong>in</strong>gl.t 6 shoM for @ pDton <strong>of</strong> ih. e|boxylic eid IroW.<br />
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