Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 673

The DOI matches its Crossref record.

A Facile and Efficient Preparation of Pillararenes and a Pillarquinone

Cao, Derong, Kou, Yuhui, Liang, Jianquan, Chen, Zhizhao, Wang, Lingyun, Meier, Herbert·2009·Angewandte Chemie International Edition

Abstract

Ring around the roses: The ipso substitution of benzene rings makes a simple and efficient synthesis of pillar[n]arenes (n=5, 6) possible. Pillar[6]arenes (see picture) and pillar[5]quinone, an oxidation product of pillar[5]arene, are novel, highly promising host systems for host–guest chemistry.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1002/anie.200904765

Cites

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 673

Metadata

Authors
Cao, D., Kou, Y., Liang, J., Chen, Z., Wang, L., & Meier, H.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2009-12-08
Volume
48
Issue
51
Pages
9721-9723
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W2063066459
Cited by
673
References
0
FWCI
9.58
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: A Facile and Efficient Preparation of Pillararenes and a Pillarquinone. https://app.cochat.ai/papers/10.1002/anie.200904765
The paper
Cao, D., Kou, Y., Liang, J., Chen, Z., Wang, L., & Meier, H. (2009). A Facile and Efficient Preparation of Pillararenes and a Pillarquinone. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.200904765

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.