## Abstract [U‐^14^C]Isosorbide and [U‐^14^C]dimethyl isosorbide with a specific activity of 462 MBq/mmol was prepared from D‐[U‐^14^C]glucose, in an overall yield of 79%, under microwave heating conditions. Copyright © 2006 John Wiley & Sons, Ltd.
Convenient one-pot synthesis of benzoquinone-[U-14c] and hydroquinone-[U-14c]
✍ Scribed by Howard Parnes; Steve Dekeczer
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- French
- Weight
- 338 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Benzoquinone-[U-14C] was synthesized in 90% yield from benzene-[U-14C] via a three step oequence. Conditions were developed which allowed this conversion to be accomplished in a one pot closed system.
The b e n ~o q u i n o n e -[ U -~~C ] thus obtained could be reduced to h y d r o q u i n ~n e -[ U -~~C ]
in quantitative yield. Preparation of ben~ene-[U-~4C] is also described.
📜 SIMILAR VOLUMES
## Abstract Starting with benzene‐U‐^14^C pentachloronitrobenzene‐U‐^14^C has been prepared by nitration followed by chlorination with antimony pentachloride in the presence of aluminum chloride.
An enzymatic method for preparing 6R-[U-14C]-tetrahydrobiopterin from [U-14C]GTP is presented. This method utilizes purified preparations of three biosynthetic enzymes for 6R-tetrahydrobiopterin, i.e., Escherichia coli GTP cyclohydrolase I, rat 6-pyruvoyl-tetrahydropterin synthase, and rat sepiapter
## Abstract Disodium [__benzene__‐U‐^14^C]‐(4‐chlorophenylthio)methylenediphosphonate, [__benzene__‐^14^C]‐Tiludronate, 2, has been prepared in six steps from [__benzene__‐U‐^14^C]‐acetanilide in an overall radiochemical yield of 41%. A key step in this transformation was the efficient conversion o
## Abstract The high yield, four‐step synthesis of catechol‐U‐^14^C from benzene‐U‐^14^C is described. Intermediates in the preparation include phenol‐U‐^14^C and o‐methoxyphenol‐U‐^14^C [guaiacol‐(phenyl‐U‐^14^C)].