Chemical Synthesis (3) Materials Science (1) Special Grade
Also, a considerable amount of starch, gum, and mineral matter.
• Malaysian study showed the essential oil to contain 54 components, of which major constituents were: ethyl trans-p-methoxycinnamate (51.6%), ethyl cinnamate, and pentadecane among others.
• Terpenoid constituents amounted to 16.4%.
• Study analyzed leaf and rhizome oils of K.
The average yields of methyl cinnamate (, entry 1), methyl 4-methoxycinnamate (, entry 2), and methyl 3-(2-thienyl)propenoate (, entry 3) were decent, but the most significant aspect of the % yield data in is that some students were able to synthesize these three Wittig products at levels that nearly matched the yields reported by Bergdahl.  This data highlights the ability of sophomore-level students to realize high yields when proper care and technique are employed. The 1H NMRs of methyl cinnamate (, entry 1), methyl 4-methoxycinnamate (, entry 2), and methyl 3-(2-thienyl)propenoate (, entry 3) were thoroughly analyzed and it was revealed that the average :ratios for these three Wittig products surpassed the : ratios reported by Bergdahl. 
37 He Z-H, Yue GG-L, Lau CB-S, Ge W, But PP-H. Antiangiogenic effects and mechanisms of trans-ethyl p-methoxycinnamate from L. J Agric Food Chem. 2012;60(45):11309-17.