Closing the Door to Lost Earnings Under the National Childhood Vaccine Injury Act of 1986.

After a wave of lawsuits against vaccine manufacturers hindered the profitability and production of life-saving vaccines, Congress enacted The National Childhood Vaccine Injury Act of 1986. The Act offers an incentive for individuals to get vaccinated in order to mitigate the population's exposure to disease, while encouraging the continued production of these serums by pharmaceutical companies. Although imperfect, the Vaccine Act fosters promise in filtering out frivolous claims and,provides a central route for due process to the individuals who suffer from a vaccine-related injury.

Dimerization and comments on the reactivity of homophthalic anhydride.

Homophthalic anhydride (HPA) dimerizes under the influence of base to provide, sequentially, the (3-4')-C-acyl dimer, a pair of chiral diastereomeric bis(lactones), 3-(2-carboxybenzyl)isocoumarin-4-carboxylic acid, and finally, 3-(2-carboxybenzyl)isocoumarin. The structures of the bis(lactones) were misassigned in 1970 based on the (presumed) thermal decarboxylative elimination reaction of the lower melting one. The preferred pathway should be , however, and crystallographic analysis of one of the bis(lactones) reverses the earlier assignment.

N-methylimidazole promotes the reaction of homophthalic anhydride with imines.

The addition of N-methylimidazole (NMI) to the reaction of homophthalic anhydride with imines such as pyridine-3-carboxaldehyde-N-trifluoroethylimine (9) reduces the amount of elimination byproduct and improves the yield of the formal cycloadduct, tetrahydroisoquinolonic carboxylate 10. Carboxanilides of such compounds are of interest as potential antimalarial agents. A mechanism that rationalizes the role of NMI is proposed, and a gram-scale procedure for the synthesis and resolution of 10 is also described.