I. Lithium alkyl and aryl monosubstituted cyclooctatetraenide
dianions (Li₂ C₈H₇-R; R = methyl, n- butyl, sec- butyl, tert- butyl,
phenyl and benzyl) were synthesized by the reaction of the appropriate
organolithium reagent with cyclooctatetraene in diethyl ether or
tetrahydrofuran. The reaction occurred cleanly and with good yield
of lithium monosubstituted...
When a student participates in a service break trip, a process called reorientation occurs after the trip is over, when the student is trying to connect what they’ve learned on the trip to their normal lives. The objective of this project was to explore the concepts of volunteerism, community service,...
The abundances of 12 elements, Fe, A1, Na, Ni, Cr, Mn,
Co, Ca, Sc, Ir, Sm and Eu have been determined by INAA in 61
individual chondrules (0.1-100 mg) separated from five Allende (C3)
meteoritic fragments ( 25g). Ti and V have been determined in 18
of these chondrules, and...
The Gd3+ ion has been used to induce quantum splitting in luminescent
materials by using cross-relaxation energy transfer (CRET). In Nd:LiGdF4, quantum
splitting results from a two-step CRET between Gd3+ and Nd3+, first involving a
transition 6G→6I on Gd3+ and an excitation within the 4f3 configuration of Nd3+
followed by...
Described herein is the synthesis of an uncharged stereoregular oligonucleotide
analog consisting of cytosine bases linked at specific intervals to a polyamide backbone
derived from (L)-glutamic acid. Preparation of this analog entailed borane reduction of
(L)- pyroglutamic acid to give optically pure lactam alcohol 9. Tosylation and alkylation
with cytosine...
Enantioselective epoxidation of crotyl alcohol, followed
by a cuprate mediated methylation, gave a 1:1 mixture of
(2S) -3- methyl -1,2- butanediol and (2R,3S)-2-methy1-1,3-
butanediol. The latter was separated as its 2,4,6-trimethylbenzenesulfonate
derivative and converted via the
iodide to the corresponding phosphonium salt. The separated
butanediol derivatives were independently transformed
to...