CYCLOCARBONYLATION OF ALLYL ALCOHOL USING COBALT PHOSPHINE CATALYST

• Main Author: ANUGERAH PURWADI (NIM : 10512074 ), JOSHUA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/22310
• Institution: Institut Teknologi Bandung

<br /> &#947;-Butyrolactone (GBL) is an ester cyclic compound with four carbons commonly used as intermediate substances for pyrrolidone or N-vinylpyrrolidone synthesis. GBL was synthesized from allyl alcohol and a mixture of hydrogen and carbon monoxide initiated by [Co2(CO)6(PPh3)2] and [Co2(CO)6(P(OPh)3)2]. Dimer cobalt complexes were synthesized from cobalt(II) salts using carbon monoxide gas (35 bar) in THF, for 24 hours. The product showed an infrared absorbance of terminal carbonyl (&#957;CO) at 1942 cm-1 for [Co2(CO)6(PPh3)2] and &#957;CO at 2009 cm-1 for [Co2(CO)6(P(OPh3)2]. The complex of [Co2(CO)6(PPh3)2] was used in the carbonylation reaction test for allyl alcohol at 140 oC for 48 hours with pressure of hydrogen and carbon monoxide of 8 and 12 bars respectively. The product of reaction shows an infrared absorbance of carbonyl at 1743 cm-1 predicted as an absorbance of carbonyl ester of GBL. The catalytic test using [Co2(CO)6(P(OPh3)2] in the same condition resulted in no &#947;-butyrolactone formation. <br />