UPDATES
Safe Removal of the Allyl Protecting Groups
References
and utility of this system are currently underway in
our laboratory.
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Experimental Section
General considerations
Unless otherwise indicated, all of the reactions were carried
out with magnetic stirring under an argon atmosphere. Re-
actions were monitored by thin layer chromatography
(TLC).
Preparation of Sulfur-Modified Au-Supported Pd
Material (SAPd)
SAPd was prepared according to a previously published lit-
erature procedure.[5d] Briefly, Au (100 mesh, 1412 mm2,
100.7 mg) was placed in a piranha solution for 5 min and
then washed sequentially with H2O (103.0 mL) and EtOH
(63.0 mL). The resulting Au mesh was placed in a round-
bottomed flask and dried for 10 min under reduced pressure
(6 mmHg). The sulfur-modified Au mesh was placed in a so-
lution of Pd(OAc)2 (5.3 mg, 0.023 mmol) in xylene (3.0 mL)
and stirred at 1008C for 12 h. The mesh was then rinsed
with xylene (503.0 mL) and dried under vacuum before
being placed in xylene (3.0 mL) and heated at 1358C for
12 h. The material was then rinsed with xylene (503.0 mL)
and dried under vacuum for 10 min to give SAPd
(100.8 mg), and this was the only source of SAPd used
throughout this research.
General procedure for the SAPd-catalyzed
deallylation of allyl esters
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Acknowledgements
This work was supported by a Grant-in-Aid for Scientific Re-
search on Innovative Areas “Molecular Activation Directed
toward Straightforward Synthesis” from the Ministry of Edu-
cation, Culture, Sports, Science, and Technology of Japan
(MEXT) and the Canon Foundation.
Adv. Synth. Catal. 2015, 357, 2119 – 2124
ꢀ 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
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