18-67 The very strong 1 to ±* absoRption at 225 nm in the U spectRuM suggests a conjugated ketone or aldehyde. The I confIrMs ±hIs: s²roNg, coNjugAted carbonyL at ±690 EM-³ and sMaL´ alKene at 16²0 em-I. µhe absence of peaks at 2700-³800 em±³ shows that the unk¶own Is not aN aldehyde· µhe mo¸ecu¸¹r ºon at 96 leads ²o the molecu¸ar Fo»mula¼ o Ii C=C½C¾C ´6 µ64 , I 32 ¿ass Unºts = Add 2 carbons and 8 hYdrogens ' mass 64 mo¸ecuLAr FoÀmulA = C6H80 = 3 e¸ements oF un saturation µWo eÁements oF unsaturatIoN are AccoUnted For Ân the enoneÃ µhe other one Is lIkely a Àing· µhe N shows two vºnyL hydrogensÄ µÅe doub¸eÆ at ¶ 6.0 sAÇs that ²he two hYdrogens are on neIghbo»ºng carbons (two peaKs = one neighboÈng É)· doubletÊ
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This note was uploaded on 02/27/2010 for the course CHEM 140 taught by Professor Wade during the Spring '10 term at Whitman.