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I. Chromium(III)-catalyzed carbometa...
~
Sommers, Erin McGeehan.
I. Chromium(III)-catalyzed carbometalation of alkynes. II. Chromium(III)-catalyzed synthesis of allenes via a syn-carbometalation/syn-elimination sequence. III. Palladium(0)-catalyzed synthesis of ene-allenes via cross-coupling reactions with alkenyl trifluoroborates.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
I. Chromium(III)-catalyzed carbometalation of alkynes. II. Chromium(III)-catalyzed synthesis of allenes via a syn-carbometalation/syn-elimination sequence. III. Palladium(0)-catalyzed synthesis of ene-allenes via cross-coupling reactions with alkenyl trifluoroborates.
作者:
Sommers, Erin McGeehan.
面頁冊數:
417 p.
附註:
Adviser: Gary A. Molander.
附註:
Source: Dissertation Abstracts International, Volume: 67-03, Section: B, page: 1452.
Contained By:
Dissertation Abstracts International67-03B.
標題:
Chemistry, Organic.
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3211149
ISBN:
9780542597558
I. Chromium(III)-catalyzed carbometalation of alkynes. II. Chromium(III)-catalyzed synthesis of allenes via a syn-carbometalation/syn-elimination sequence. III. Palladium(0)-catalyzed synthesis of ene-allenes via cross-coupling reactions with alkenyl trifluoroborates.
Sommers, Erin McGeehan.
I. Chromium(III)-catalyzed carbometalation of alkynes. II. Chromium(III)-catalyzed synthesis of allenes via a syn-carbometalation/syn-elimination sequence. III. Palladium(0)-catalyzed synthesis of ene-allenes via cross-coupling reactions with alkenyl trifluoroborates.
- 417 p.
Adviser: Gary A. Molander.
Thesis (Ph.D.)--University of Pennsylvania, 2006.
*Please refer to dissertation for diagrams.
ISBN: 9780542597558Subjects--Topical Terms:
193634
Chemistry, Organic.
I. Chromium(III)-catalyzed carbometalation of alkynes. II. Chromium(III)-catalyzed synthesis of allenes via a syn-carbometalation/syn-elimination sequence. III. Palladium(0)-catalyzed synthesis of ene-allenes via cross-coupling reactions with alkenyl trifluoroborates.
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I. Chromium(III)-catalyzed carbometalation of alkynes. II. Chromium(III)-catalyzed synthesis of allenes via a syn-carbometalation/syn-elimination sequence. III. Palladium(0)-catalyzed synthesis of ene-allenes via cross-coupling reactions with alkenyl trifluoroborates.
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417 p.
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Adviser: Gary A. Molander.
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Source: Dissertation Abstracts International, Volume: 67-03, Section: B, page: 1452.
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Thesis (Ph.D.)--University of Pennsylvania, 2006.
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*Please refer to dissertation for diagrams.
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I. Chromium(III)-catalyzed carbometalation of alkynes. Transition metal-catalyzed methods to manipulate unfunctionalized, unsaturated carbon bonds provide access to compounds otherwise difficult to synthesize by standard organic chemistry methods. In this work the generation of substituted alkenes from alkynes in the presence of cationic chromium(III) complexes is explored.*
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II. Chromium(III)-catalyzed synthesis of allenes. Interest in allenes as biologically active compounds and as chiral transfer reagents has driven the development of general methods for their synthesis. Many syntheses of allenes have been reported; however, few are able to achieve their synthesis with high functional group tolerance and in high enantiomeric excess. Efforts to expand the current methods for the synthesis of allenes are presented herein. Specifically, the syn-carbometalation/ syn-elimination of propargylic substrates via chromium(III) catalysis to produce allenes is reported.*
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III. Palladium(0)-catalyzed cross-coupling reaction to synthesize ene-allenes. A second method to synthesize allenes is presented. In particular, ene-allenes possessing various functional groups are synthesized in good yields from propargylic carbonates through a Suzuki Miyaura cross-coupling reaction. Additionally, chiral non-racemic ene-allenes are produced with moderate to high enantiomeric excess from propargylic phosphates.*
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