## Abstract The preparation of ^14^C‐labelled dimethylsilane‐1, 1‐diol in two steps from ^14^C‐labelled diphenyldimethylsilane is described. Aluminum chloride catalyzed protodesilylation of diphenyldimethylsilane with HCl in dichloromethane or dimethyldichlorosilane at 0–5°C affords labelled dimeth
Preparation of ring-tritiated and of aldehyde-14C-labelled 1-pyrenecarboxaldehyde
✍ Scribed by Gary H. Posner; Itzhak Barness; William H. Biggley; Howard H. Seliger; David C. Kaplan
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- French
- Weight
- 335 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
A short, direct, and efficient synthesis of very high specific-activity ring-tritiated 1-pyrenecarboxaldehyde is described.
A novel aspect of this synthesis involves direct bromination of an aromatic pyrene system rrying an electronwithdrawing aldehyde group.
Synthesis of 'C-labelled l-pyrenecarboxaldehyde is also described.
Each o f these compounds was converted in one step into the correspondingly radiolabelled trans-1-( 2 ' -me thoxyvinyl ) pyrene . Key Words: vinyl)pyrene, radiolabelled PAH tritium, 14C, 1-pyrenecarboxaldehyde, I-( 2'-methoxyand I4C-2) in order to study the details of its metabolism and the intricacies of the reaction(s) of its metabolite(s) with various biomoleculcs. We describe here preparation of ring-tritiated and of aldeh~de-~~c-labelled l-pyrenecarboxaldehydes (3H-L and 14C-;) and conversion of each into the correspondingly labelled trans-MVP ( 3H-2 and l4C-?). M 0362-48O3/sS/lOlO2~Sol .oO @ 1985 by John Wiley & Sons, Ltd.
📜 SIMILAR VOLUMES
Asymmetric synthesis of AMPA potentiator LY450108-[ 14 C] containing 14 C-label attached to the chiral center of the molecule, was accomplished based on Evans' chiral oxazolidinone auxiliary method. Diastereoselective methylation of p-nitrophenylacetic acid derivative was used as a key step. The aux
Und yl, dodecyl and hexadecyl sulphonates were prepared w i t h y&-label i n t h e 1 -p o s i t i o n . The syntheses r e q u i r e t h e f o r m a t i o n o f a Grignard intermediate from t h e appropriate n-1 a l k y l bromide f o l l o w e d by c a r b o x y l a t i o n o f t h e Grignard w i t h
## Abstract 1‐[^14^C]‐__α__‐Aminopropanephosphonic acid, with a specific activity of 1.736 µCi mg^−1^, has been prepared from 1‐[^14^C]‐propanal, triphenyl phosphite, and benzyl carbamate by interaction in toluene in the presence of boron trifluoride‐etherate, followed by hydrolysis. The product wa
PSEP4R1TITI 3F 14C-L4PELLEC TPAZODQNE HYDSOCHLO!lIX, R e c e i v e d on J u n e 6 , 1 9 7 3 Trazodone hydrochloride\*, 2-I3-[(4-m-chlorophenyl)-lpiperazinyll propyll s-triazolo-[4,3-a1 -pyridine-3 (2H) -one hydrochloride is a new psycotropic drug derived from triazolopyridine (') and has been extens
A high-yield, relatively simple synthetic route leading to incorporation of l'C into the secondary position of the adamantane nucleus is described. The synthesis was achieved by the sequence shown in Figure 2. The key steps involved the introduction of a I4C label by diazome1hane-14C ring expansion